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Nutrition

Ferritin

Analyte: Ferritin
Specimen Type: Serum, Inquire for additional option(s)
Biological or Clinical Significance: Ferritin is protein that has a central role in the storage of iron. It has a molecular weight of ≥ 440000 Daltons, depending upon the iron content, and consists of a protein shell (apoferritin) of 24 subunits and an iron core containing an average of approximately 2,500 Fe3+ ions (in the basic isoforms). Ferritin is…

Homocysteine, Total

Analyte: Homocysteine, Total
Specimen Type: For information on this assay, please contact nexelis.
Biological or Clinical Significance: Homocysteine is a sulfur containing amino acid that functions as an intermediate in the pathway of methionine and S-adenosylmethionine synthesis. Although methionine is an amino acid that is found in proteins, homocysteine is not. The conversion of homocysteine to methionine requires vitamin B12 and folic acid, and homocysteine catabolism requires vitamin B6 as a cofactor,…

Vitamin D, 1,25-(OH)2 (1.25 dihydroxy Vitamin D)

Analyte: Vitamin D, 1,25 - Dihydroxy
Specimen Type: Serum, Inquire for additional options(s)
Biological or Clinical Significance: Vitamin D, also known as caliciferal; is a group of fat-soluble secosteroids, the two major physiologically revlevant forms of which are vitamin D2 (ergocalciferol) and vitamin D3 (cholecalciferol). Vitamin D without a subscript refers to either D2 or D3 or both. Vitamin D3 is derived mainly from actions of ultraviolet light on the skin while…
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