Labcorp reticulocyte count

RBC: two 500-μL lavender-top Microtainer™ tubes filled to at least 50% of tube capacity (Note: If any other size lavender tube is used, the tube must be filled to at least 50% capacity of tube fill volume. Insufficient volume may limit the extent of procedures performed.); and G6PD: one lavender-top (EDTA) tube, green-top (heparin) tube or yellow-top (ACD) tube (0.1 mL) whole blood (Note ...

White Blood Cell (WBC) Count 005025 WBC Differential and Total 015173 Test Name Test No. Anemia and Hemoglobin Anemia Profile B Test Includes: CBC; ferritin; folates; iron; iron binding capacity; reticulocyte count; vitamin B12 042077 Ferritin 004598 Hemoglobinopathy (Hgb) Fractionation Profile Note: Also known as Hgb Electrophoresis Plus ...Reticulocyte Count (Automated) 2. ข้อบ่งชี้ในการส่งตรวจ (indication) :Therefore, reticulocyte counts from automated systems should always be confirmed with a manual count. An absolute reticulocyte count of greater than 80,000/ul in dogs or 60,000/ul in cats indicates a regenerative response. Hemolysis and blood loss are the two general pathologic mechanisms that can lead to a regenerative anemia.The reticulocyte count is an important indicator of effective erythropoiesis. In healthy individuals, reticulocytes circulate in the peripheral blood for 1-2 days after being released from the bone marrow, before they lose sufficient RNA to become red blood cells. During periods of increased erythropoietic demand, reticulocyte lifespan in ...Reticulocyte (Retic) Count. Order Name RETIC Test Number: 0111800 Revision Date 10/25/2019. Test Name Methodology LOINC Code; Reticulocyte Absolute Flow cytometry : 60474-4 Reticulocyte Percent Flow cytometry : 17849-1 SPECIMEN REQUIREMENTS ... Labcorp Oklahoma, Inc.Reticulocyte Count. TEST: 005280. CPT: 85045. Print Share Include LOINC® in print. Test Includes. Reticulocytes are expressed as a percentage in a total of 1000 RBCs. Expected Turnaround Time. Within 1 day.

Evaluate peripheral smear for megaloblastosis and perform a reticulocyte count in patients with suspected macrocytosis. C 1, 3-5, 19 Order methylmalonic acid and homocysteine levels if vitamin B 12Antibodies to thyroid microsomes (thyroid peroxidase) are present in 70% to 90% of patients with chronic thyroiditis. They are also present in smaller percentages of patients of other thyroid diseases. Antibody production may be confined to lymphocytes within the thyroid, and serum may be negative. Small numbers (3%) of people with no evidence ...A peripheral blood smear test is a technique healthcare providers use to examine your red and white blood cells and your platelets. This test gives them a clear picture of changes in your blood cells and platelets that may be a sign of disease. A peripheral blood smear test is an important part of diagnosing disease.Objective: The automated reticulocyte parameters (absolute reticulocyte count, immature reticulocyte fraction (IRF) and reticulocyte hemoglobin content (RET-He)) are of value in managing adults and older children with a variety of hematological disorders. However, the lack of reference intervals for these parameters in neonates and young infants has limited their application to that population.Step 1: Add to cart - for each panel below click "Buy Online" button. This will open in a new tab. Click "Add to Cart" button there, and then close the tab. Click Buy Online then "Add to Cart" button in the new tab. Close the tab. (Reticulocyte Count Blood Test $25.88); Click Buy Online then "Add to Cart" button in the new tab. Close the tab. (Iron and Total Iron …Step 1: Add to cart - for each panel below click "Buy Online" button. This will open in a new tab. Click "Add to Cart" button there, and then close the tab. Click Buy Online then "Add to Cart" button in the new tab. Close the tab. (Reticulocyte Count Blood Test $25.88); Click Buy Online then "Add to Cart" button in the new tab. Close the tab. (Iron and Total Iron …While 401(k) money is not usually counted as earned income on Social Security, it affects the taxes you pay. Your Social Security income could, therefore, be less than you anticipa...

Results: The reticulocyte count of test subjects (subjects with Plasmodium falciparum malaria) was 0.15 ± 0.04% and that of control subjects (subjects without any malaria parasite) was 0.31 ± 0.08%. Reticulocyte count. ห้องปฏิบัติการสาขาวิชาโลหิตวิทยาและอองโคโลยี. 1. การทดสอบ : Reticulocyte count. 2. ข้อบ่งชี้ในการส่งตรวจ (indication) : Reticulocyte Count LabCorp; In stock. Reticulocyte Count LabCorp. SKU. 1219-l. LabCorp Test #: 005280; CPT: 85045. Details . Evaluate erythropoietic activity which is increased in acute and chronic hemorrhage, and hemolytic anemias; evaluate erythropoietic response to antianemic therapy.A red blood cell (RBC) count measures the number of red blood cells, also known as erythrocytes, in your blood. Red blood cells carry oxygen from your lungs to every cell in your body. Your cells need oxygen to grow, reproduce, and stay healthy. An RBC count that is higher or lower than normal is often the first sign of an illness.TEST: 551300. CPT: 87522. Updated on 04/11/2024. View Changes. Print Share Include LOINC® in print. Viral Load, Abbott, Real-time. 3 - 7 days. Turnaround time is defined as the usual number of days from the date of pickup of a specimen for testing to when the result is released to the ordering provider.

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A complete blood count (CBC) is a blood test. It's used to look at overall health and find a wide range of conditions, including anemia, infection and leukemia. A complete blood count test measures the following: Red blood cells, which carry oxygen. White blood cells, which fight infection. Hemoglobin, the oxygen-carrying protein in red blood ...A reticulocyte percentage that is higher than "normal" can be a sign of anemia, but this depends on the health of a person's bone marrow. Calculating the reticulocyte production index is an important step in understanding whether or not the reticulocyte count is appropriate to the situation. This is often a more important question than whether ...The reticulocyte count is an important laboratory test that provides information about the bone marrow's ability to produce new red blood cells. It is used to evaluate and monitor anemia, which is a condition characterized by a low red blood cell count. The reticulocyte count is performed as part of a complete blood count (CBC) and can help ...Erythropoietin (EPO), a glycoprotein (~30,400 daltons) produced primarily by the kidney, is the principal factor regulating red blood cell production (erythropoiesis) in mammals. 3 Renal production is regulated by changes in oxygen availability. Normally, EPO levels vary inversely with hematocrit. Under conditions of hypoxia, the level of EPO ...

1. Blood reticulocyte count tells us. A. the rate of platelet formation. B. the clotting ability of the blood. C. changes in WBC population that can indicate infection. D. rate of erythrocyte production. 2. All leukocytes contain nuclei and have some ability to phagocytose material. They also contain granules in the cytoplasm, although certain ...Viewing All View LabCorp Only View Quest Only. Quest: $35 LabCorp: $29 CBC with Differential. Complete Blood Count, CBC with Diff and Platelet, Hemogram ... Reticulocyte Count. Sedimentation Rate, Modified Westergren. Serotonin Level, Blood. Sodium. Sodium, Urine (24-Hour) Sodium, Urine (Random) TSH. Testosterone Free (Direct)Method Name. Flow Cytometry. Reference Values. Newborn – 1 Day: 2.5-6.5 % 2 days – Adult: 0.5-2.6 % Days and Times Test Performed. Monday through Sunday. Report …A low platelet count means your blood lacks the small cells it needs to form clots. Some of the most common causes of low platelets include an autoimmune disease called idiopathic thrombocytopenic purpura (ITP), leukemia, infection, nutritional deficiencies, pregnancy, and certain medications. Symptoms include bruising easily, a rash of tiny red spots, nosebleeds or bleeding gums, blood in the ...Reticulocyte count, retic. What is this test? This test measures the number of reticulocytes in your blood. Reticulocytes are immature red blood cells that are still developing. The test finds out whether your bone marrow is making red blood cells the way it should. Red blood cells flow throughout your bloodstream. ...Hereditary spherocytosis (HS) is the most prevalent cause of hemolytic anemia due to an abnormal red cell membrane and classifies as a type of congenital hemolytic anemia. Oskar Minkowsky first described it in the early 1900s.[1] Erythrocytes are unable to maintain their normal biconcave shape due to genetic mutations in membrane/cytoskeletal proteins that play a role in structural morphologic ...Collecting minimum volumes can result in a need for sample recollection, and/or a delay in results. Minimum volumes are subjective and cannot account for all aspects of specimen and testing needs. Refer to the Specimen Required section for optimal volumes for laboratory specimens. Contact the Bronson Laboratory if complex collection exceptions ...Reticulocyte count may also be used when you have a known iron or vitamin vitamin B12 or folate deficiency, known kidney disease, known bone marrow suppression as may occur during chemotherapy or bone marrow transplant. Reticulocyte count may be requested with a RBC count, haematocrit, and haemoglobin at intervals recommended by your doctor to ...Test Code RETC Reticulocyte Count, Automated Performing Laboratory. Hunterdon Medical Center. ... Reticulocyte Absolute: 0.02-0.11: 10*12/L: Mean Reticulocyte Volume: 102.7-124.9: fL: Immature Reticulocyte Fraction: 0.16-0.36 : Method Name. Methylene Blue Stain performed on Beckman/Coulter DxH 800.Use. This heterocyclic (iminostilbene) compound has potent antiepileptic properties and is effective alone or with other antiepileptic drugs in partial seizures, especially complex partial seizures, generalized tonic-clonic seizures, and combinations of these seizure types. Carbamazepine generally is ineffective for absence, myoclonic, and ...LabCorp test: 006530 Components: Hepatitis B Surf Ab Quant Hematology Comments ... Reticulocyte Count (component) Stores: EconoLabs, Health Tests Direct, LabReqs, LifeExtension, Personalabs, Private MD, RequestATest, Walk-In Lab ...A reticulocyte count is a blood test that measures how fast red blood cells called reticulocytes are made by the bone marrow and released into the blood. Reticulocytes are in the blood for about 2 days before developing into mature red blood cells. The reticulocyte count rises when there is a lot of blood loss or in certain diseases in which ...

See also Health Statistics Calculator Online. Suppose a patient's Reticulocyte Percentage is 2.5%, and their Total Red Blood Cell Count is 5.2 million/μL. Utilizing the ARC formula: ARC = (2.5 / 100) x (5.2 / 1000) = 0.13 million/μL. This means the patient's Absolute Reticulocyte Count is 0.13 million/μL.

Absolute Reticulocyte Count Input Retic Percent : HCT . Result : ARC : 10^6/microL : Decimal Precision Equations used . ARC = ReticPercent * HCT / 45 Legal Notices and Disclaimer All information contained in and produced by the EBMcalc system is provided for educational purposes only. This information should not be used for the diagnosis or ...Reticulocyte (Retic) Count. Order Name RETIC Test Number: 0111800 Revision Date 10/25/2019. Test Name Methodology LOINC Code; Reticulocyte Absolute Flow cytometry : 60474-4 Reticulocyte Percent Flow cytometry : 17849-1 SPECIMEN REQUIREMENTS ... Labcorp Oklahoma, Inc.By including reticulocyte counts (RETICs) and reticulocyte hemoglobin (RETIC-HGB) in every complete blood count (CBC), it’s possible to detect—and subsequently diagnose and treat—a variety of issues earlier than with traditional CBCs. Here’s why: Reticulocytes act as an early warning system.The reticulocyte count is a measure of the number of RBCs delivered by the bone marrow. It is elevated with active erythropoiesis such as regeneration, and is decreased in hypoplastic or deficiency conditions such as vitamin B12 deficiency. Laboratory Corporation of America (LabCorp) Test Menu; Quest Diagnostics Test Directory . ... Blood Count, Reticulocyte, Automated : Acceptable Alternative Container(s) A CBC and reticulocyte count begin a cascade with the appropriate chemistry tests added as needed. The peripheral blood smear, the results of the biochemical tests and the patient clinical history is reviewed by a pathologist who issues an interpretive report. ... Labcorp Oklahoma, Inc.Jul 4, 2023 · Hereditary spherocytosis (HS) is the most prevalent cause of hemolytic anemia due to an abnormal red cell membrane and classifies as a type of congenital hemolytic anemia. Oskar Minkowsky first described it in the early 1900s.[1] Erythrocytes are unable to maintain their normal biconcave shape due to genetic mutations in membrane/cytoskeletal proteins that play a role in structural morphologic ...

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CBC with diff. CBC w/o diff. Hematocrit. Hemoglobin. Platelet count. Reticulocyte. WBCSed Rate/ESR. PT/INR. PTT.Labcorp test details for Reticulocyte Count. Patients & Individuals (Press Enter or Spare to Getting to Landing Page or Force Down to expand Menu) Patients & Individuals expand menuReticulocyte Count (test) Stores: EconoLabs, Health Testing Centers, Health Tests Direct, LabReqs, LifeExtension, Private MD, RequestATest, Walk-In Lab LabCorp test: 005280 Components: Reticulocyte Count UIBC (component) Stores: DiscountedLabs, EconoLabs ...A CBC is a common procedure that measures the different components in the blood. Doctors will measure different blood cell levels and compare them with the expected levels for a person of the same ...CRP is an acute phase reactant, which can be used as a test for inflammatory diseases, infections, and neoplastic diseases. Progressive increases correlate with increases of inflammation/injury. CRP is a more sensitive, rapidly responding indicator than ESR. CRP may be used to detect early postoperative wound infection and to follow therapeutic ...reticulocyte count: Definition A reticulocyte count is a blood test performed to assess the body's production of immature red blood cells (reticulocytes). A reticulocyte count is usually performed when patients are evaluated for anemia and response to its treatment. It is sometimes called a retic count. Purpose Diagnosis A reticulocyte count ...Reticulocyte Count-12-Hour Fasting Required: NOCPT Codes for this test: 85045 LabCorp's information for this test: Test Includes Reticulocytes are expR eticulocyte count - is a blood test that measures how fast red blood cells called reticulocytes are made by the bone marrow and released into the blood. Reticulocytes are in the blood for about 2 days before developing into mature red blood cells. Fasting is not required for this test. After placing an order, you will receive a doctor approved lab order by email usually within 20-30 minutes. ….

Basic Anemia Panel Blood Test. CBC, Iron & TIBC, Ferritin, Reticulocyte. Test Code: 005009, 004598, 001321, 005280. Specimen Type: Blood. Description: Anemia Panel, Basic (LabCorp) This package combines several common tests which can help to determine if a person is suffering from anemia . Anemia is a condition in which a person does not have ...Reticulocyte: Normal results for reticulocytes in adults are between 0.5 and 2.5%. Blood smear: A blood smear looks at the shape of your blood cells. Abnormally shaped red blood cells can be a ...The anemia of chronic disease is a multifactorial anemia. Diagnosis generally requires the presence of a chronic inflammatory condition, such as infection, autoimmune disease, kidney disease, or cancer. It is characterized by a microcytic or normocytic anemia and low reticulocyte count. Values for serum iron and transferrin are typically low ...Anemia is a common problem, and blood tests are necessary to diagnose its various causes. Examples of tests commonly used in the diagnosis of anemia include: mean corpuscular volume, reticulocyte count, iron status, vitamin assays (serum and erythrocyte folate, cobalamin), hemolysis markers (lactate dehydrogenase [LDH], total bilirubin, haptoglobin), and creatinine concentration.A normal result for healthy adults who are not anemic is 0.5% to 2.5%. The normal range depends on your blood level of hemoglobin. Hemoglobin is a protein in red blood cells that carries oxygen. The range is higher if hemoglobin is low, from bleeding or if red cells are destroyed. Normal value ranges may vary slightly among different laboratories.Epic Order Code: Reticulocyte Count Sunquest Order Code: RET Px Order Code: LAB2473. Specimen Collection Type. Preferred: Lavender. Minimum Collection Volume. 2 mL. Reference Range. Uncorrected results for: Newborns 0 - 2 weeks 2.5-6.5% Adults and children 0.5-2.0% Absolute reticulocyte counts:Reticulocyte Count and Reticuloc yte Hemoglobin . Content as Predictors o f Early Response to . Exclusive Oral Iron in Children with Iron . Deficiency Anemia // Anem ia. 2016. Vol. 2016.WBC function involves the response to an inflammatory process or injury. Normal levels of WBCs for men and women are 4,300-10,800/cubic mm. When the white count is abnormal, the differential segment can measure the percentage of the various types of white cells present. Differential counts add up to 100 percent.Protein:creatinine ratio in a first-morning or random untimed "spot" urine specimen is recommended testing to ascertain chronic kidney disease. 1 It is also used to evaluate nephrotic syndromes; work up other renal diseases, including malignant hypertension, glomerulonephritis, Goodpasture syndrome, cryoglobulinemia, toxemia of pregnancy, drug ...Doctors order a reticulocyte count if someone has a low number of red blood cells, called anemia. The reticulocyte count can help doctors know if the bone marrow is working well to make new red blood cells. Let the doctor know if your child has had a blood transfusion. This can affect the reticulocyte count test. Labcorp reticulocyte count, Test Mnemonic. RETIC. CPT Codes. 85045 - QTY (1) LOINC ®. 14196-0. Includes. Reticulocyte percent; Absolute Reticulocyte Number; Performing Laboratory. Cleveland Clinic Laboratories, In 1969, Dr. Robert S. Hillman performed quantitative studies relating the reticulocyte count to red cell production. He demonstrated that with severe anemia, the use of the reticulocyte count to determine marrow response, semiquantitatively, required a correction for premature release of reticulocytes. 8 In effect, he showed that one had to …, Labcorp test details for Thyroxine (T4), Free, Direct. FT 4 may be increased with radiologic contrast agents, propranolol, amiodarone, and heparin. It may be decreased with carbamazepine (Tegretol®). Free T 4 is a small part of total T 4.Increased free T 4 levels may occur in subjects with nonthyroid diseases. Such elevations are described as transient. 2 Low values were reported in patients ..., A reticulocyte count is a blood test that measures how fast red blood cells called reticulocytes are made by the bone marrow and released into the blood. Reticulocytes are in the blood for about 2 days before developing into mature red blood cells. The reticulocyte count rises when there is a lot of blood loss or in certain diseases in which ... , This is termed the reticulocyte count. Basic Science. It is assumed that the normal red cell life span is 120 days and that the duration of a reticulocyte in the peripheral blood is 1 day. It follows that reticulocytes at a random time, in a normal subject at a steady state, will be 1/120, or 0.8% of all red cells. Allowing for a 10% variation ..., Reticulocyte count: This measures new red blood cells and is used to determine the cause of anemia.A normal or low reticulocyte count suggests that the body cannot keep up with making new red cells, which may happen when someone is deficient in iron or folate.; Blood differential: A blood differential may give further clues about anemia. This test shows variations in cell size, shape, or color., Labcorp test details for Anemia Profile A. Skip to main content Close Menu. Logins. Individuals & Patients. Find a ... Reticulocyte Count % 17849-1: Reflex Table for Immature Cells; Order Code Order Name Result Code Result Name UofM Result LOINC; Reflex 1: 115399: Immature Cells: 115400: Bands % 35332-6:, Scientifically rigorous, extensive in scale. Our global lab footprint, vast clinical data and scientific expertise help accelerate the drug development process. Stop wondering. Go test yourself. Explore over 50 self-ordered lab tests and get answers about your health., Reticulocyte Count, Comprehensive. Preferred Specimen. Lavender EDTA, Whole blood. Minimum Volume. 1mL Microtainer 0.5 mL. Specimen Stability. 24 hours room ..., Reticulocyte count: This measures new red blood cells and is used to determine the cause of anemia.A normal or low reticulocyte count suggests that the body cannot keep up with making new red cells, which may happen when someone is deficient in iron or folate.; Blood differential: A blood differential may give further clues about anemia. This test shows variations in cell size, shape, or color., Reticulocyte (Retic) Count. Order Name RETIC Test Number: 0111800 Revision Date 10/25/2019. Test Name Methodology LOINC Code ... Labcorp Oklahoma, Inc., LabReqs. Reticulocyte Count. Covered tests: Reticulocyte Count ( LabCorp ) Covered components: Reticulocyte Count. Blacklisted States: NY, NJ, RI. $39.99. $42.00. …, From COVID-19 tests and allergy tests to various types of drug tests, we have the online tests you are looking for. We offer convenient and affordable online testing for nearly any test category you may be looking for. Go To Discount Panels. Quest: $89. LabCorp: $89., Reticulocytes are non-nucleated immature red blood cells. They are not normally present in the circulation in high numbers, though may be seen if the bone marrow is producing large numbers of red cells. ... Absolute reticulocyte count: 50 - 100 x 10⁹/L; Reticulocyte percentage: 0.5 - 2.5%; The reticulocyte count should be interpreted in …, Get to know Labcorp At Labcorp, we believe in the power of science to change lives. We are a leading global life sciences company that delivers answers for crucial health questions. Through our ..., Labcorp test details in Reticulocyte Count. Patients & Individuals (Press Enter or Space go Go till Landing Page or Pressed Down to expand Menu) Patients & Individuals expand menu, Step 1: Add to cart - for each panel below click "Buy Online" button. This will open in a new tab. Click "Add to Cart" button there, and then close the tab. Click Buy Online then "Add to Cart" button in the new tab. Close the tab. (Reticulocyte Count Blood Test $25.88); Click Buy Online then "Add to Cart" button in the new tab. Close the tab. (Iron and Total Iron-Binding Capacity Blood Test ..., Reticulocyte Count - Antech Diagnostics ... default, Description. Measurement of percentage of reticulocytes in peripheral blood for evaluation of erythropoietic activity and to help direct clinical management of anemia. Reference …, Labcorp test details for Anemia Profile A Skip to main content Close Menu ... Reticulocyte Count % 17849-1: Reflex Table for Immature Cells; Order Code Order Name ..., Reticulocyte maturation is incompletely understood and requires further investigation. RBCs with membrane defects or cation leak disorders caused by genetic variants offer an insight into reticulocyte maturation as they present characteristics of incomplete maturation. In this review, we compare the structure of the mature RBC membrane with ..., Gel-barrier tube (send entire tube) preferred. Red-top tube or green-top (heparin) tube is acceptable if centrifuged within 45 minutes and the serum or plasma is removed and placed in a tightly-stoppered secondary tube., 000810. Vitamin B12 and Folate. 96805-7. 002020. Folate (Folic Acid), Serum. ng/mL. 2284-8. Labcorp test details for Vitamin B12 and Folates., Reticulocyte count. ห้องปฏิบัติการสาขาวิชาโลหิตวิทยาและอองโคโลยี. 1. การทดสอบ : Reticulocyte count. 2. ข้อบ่งชี้ในการส่งตรวจ (indication) :, The tests listed by specialty and category are a select group of tests offered. For a complete list of Quest Diagnostics tests, please adjust the filter options chosen, or refer to our Directory of Services. Reticulocyte Count, Automated - Use in evaluating erythropoietic activity., These are real scientific discoveries about the nature of the human body, which can be invaluable to physicians taking care of patients. Have feedback about this calculator? The Absolute Reticulocyte Count & Reticulocyte Index Assesses appropriate response to anemia, frequently in Sickle Cell Disease patients., Viewing All View LabCorp Only View Quest Only. Quest: $35 LabCorp: $29 CBC with Differential. Complete Blood Count, CBC with Diff and Platelet, Hemogram ... Reticulocyte Count. Sedimentation Rate, Modified Westergren. Serotonin Level, Blood. Sodium. Sodium, Urine (24-Hour) Sodium, Urine (Random) TSH. Testosterone Free (Direct), The Medicare program will allow the laboratory to bill the patient for denied LCD/NCD coverage services only if an Advance Beneficiary Notice of Non-coverage (ABN) is completed, signed and dated by the patient prior to service being rendered, and forwarded to the laboratory prior to testing. This policy applies to all Medicare Part B providers ..., A reticulocyte count is a blood test that measures how fast red blood cells called reticulocytes are made by the bone marrow and released into the blood. Reticulocytes are in the blood for about 2 days before developing into mature red blood cells. The reticulocyte count rises when there is a lot of blood loss or in..., Hemoglobin electrophoresis (pronounced he-ma-glow-bin elek-tro-fo-re-sus) is one process that healthcare providers use to analyze hemoglobin in your red blood cells. Hemoglobin is a protein in your red blood cells that helps cells carry oxygen throughout your body. Sometimes, the gene controlling your hemoglobin changes or mutates, turning ..., Reticulocyte count is used as part of a comprehensive evaluation to assess an individual’s overall health, as well as when someone has symptoms of anemia such as fatigue or weakness. This test provides information about the body’s red blood cell production, as well as the ability of the bone marrow to produce these cells., The instrument counts 30,000 erythrocytes in each specimen. Because a known aliquot is counted, an actual RBC per unit volume is performed and an absolute reticulocyte count is obtained.(Instruction manual: Automated Hematology Analyzer XN series [XN-9000], North American edition, Code No. CJ410539. November 2015), Ferritin is found in virtually all cells of the body and serves as the cellular storage repository for iron. 2,3 Ferritin is a macromolecule with an average molecular weight of near 440 kD that varies depending on the iron content. Ferritin consists of a protein shell (apoferritin) of 24 subunits surrounding an iron core consisting of up to 4000 ferric iron ions.