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Ferritin
| Item | Value | ||||
|---|---|---|---|---|---|
| Approval req'd? | For testing outside of normal test availability (e.g. weekend testing) contact Laboratory resident on-call at x3-1667 | ||||
| Available Stat? | No | ||||
| Test code | FERR | ||||
| Performed by | China Basin Chemistry | ||||
| In House Availability | Monday-Friday (day shift) | ||||
| Method | Chemiluminescent immunoassay (Siemens Centaur) | ||||
| Container type | Gold top (preferred). Red or Lt. Green top acceptable | ||||
| Amount to Collect | 1 mL blood | ||||
| Sample type | Serum (preferred) or Heparinized plasma | ||||
| Preferred volume | 0.5 mL serum or plasma | ||||
| Min. Volume | 0.25 mL serum or plasma | ||||
| Processing notes | Refrigerate | ||||
| Units | µg/L |
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| Normal range |
Reference ranges adopted from Quest Diagnostics based on split Pt. comparison testing using the same instrument/methodology (Siemens Centaur) |
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| Turn around times | 1-3 days | ||||
| Additional information | Hemolyzed specimens may give false elevations. Our reference range does not differentiate menstruating and non-menstruating females, but levels are known to approach those in males following menopause. Ferritin is a more sensitive test of iron stores than serum iron, transferrin saturation (saturation of iron-binding capacity) or RBC indices. Iron-deficient erythropoiesis begins at ferritin levels of 25-40 µg/L, within the reference range; a cutoff level of 16 yields a sensitivity of 75% and a specificity of 98% (Hallberg L et al. Br J Haematol 1993;85:787). Markedly elevated levels may be seen in some infections, in hemochromatosis, in patients with repeated red cell transfusions (e.g. thalassemia) and in Hemophagocytic Lymphohistiocytosis (HLH) |
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| Medical Necessity? | Yes. Click here for more information | ||||
| LOINC code | 2276-4 | ||||
| Last Updated | 5/1/2011 5:54:49 PM | ||||
| Entry Number | 377 | ||||
| Lab Procedure Link | Click here for Procedure |
If you have additional questions regarding this test, please call: 415-353-1667