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Folate, RBC

Item Value
Approval req'd? No
Available Stat? No
Test code FOLR
Performed by China Basin Chemistry
In House Availability Tuesday, Thursday (day shift)
Method Competitive immunoassay using direct chemiluminescent technology (Siemens Centaur)
Container type Lavender top
Amount to Collect 2 mL blood
Sample type EDTA whole blood
Preferred volume 2 mL blood
Min. Volume 0.5 mL blood
Processing notes Do not centrifuge. Order a HCTF if no hematocrit result will be available from a HGRM, CBC or CBCD on the same sample. Freeze aliquot at -20C within 3 hours of draw.
Units µg/L of RBC hemolysate
Normal range 280-791 µg/L of RBC hemolysate

Reference range adopted from reagent manufacturer performed studies and verified by running normal samples collected from outpatients with a normal FBS, Hematocrit and MCV.
Synonyms Red cell folate; folic acid;
Turn around times 1-5 days
Additional information To convert µg/L to nmol/L (SI units) multiply by 2.265.

Serum test not offered. In order to obtain the hematocrit needed to calculate the result of the assay, a hematocrit is automatically ordered and charged separately if not otherwise available on the same sample.
CPT coding 82747
LOINC code 2283-0
Last Updated 6/20/2016 1:10:54 PM
Entry Number 392
Lab Procedure Link Click here for Procedure
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