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Test Code FORBC RBC Folate

Specimen Required

1 mL whole blood – see instructions

Specimen Minimum Volume

0.2 mL

Specimen Stability

Folate Room temperature: 72 hours , Refrigerated: 72 hours, Frozen: 30 days
Folate (light protected) Room temperature: 5 days, Refrigerated: 5 days, Frozen: 30 days
Hematocrit Room temperature: 48 hours, Refrigerated: 48 hours, Frozen: Unacceptable

Day(s) and Time(s) Performed

Mon-Fri evening

Method Name

Immunoassay (IA)

Includes

HCTRFHCT RBC Folate
FOLP – Folate, Whole Blood
FOLRRBC Folate

Collection Container / Tube

Preferred: EDTA (lavendar-top)
Other Acceptable Container: None

Transport / Storage Conditions

Room Temperature.

Special Instructions

Submit 1 EDTA (lavender-top) tube at room temperature. 

Both the HCT and folate will be performed on this tube. Do not freeze as this will affect the HCT

Folate is light sensitive. Minimize exposure to light during sample handling and storage. Foil wrap samples to protect from light. Gross hemolyis is acceptable.

Reference Values

280 ng/mL

CPT Codes

82747

Analytic Time

Next day

Alias/See Also

FOLATE RBC
LAB70
FOLRB