Test directory: Folate, Serum and RBC

Ordering Code 578
Test Name Folate, Serum and RBC
Alias Folic Acid, Tetrahydrofolate, Pteroylglutamic Acid for RBC and
Serum
Preferred Specimen Whole Blood, EDTA, K2 AND Serum
Preferred Container 1 L (EDTA - Lavender Top) 1 SS (Serum/Separator - Red/Grey or Gold)
Optimum Volume Whole Blood, EDTA, K2: 3 mL AND Serum: 1 mL
Handling Instructions Foil specimens to protect from light.
Transport Requirements Oahu: Refrigerated
Airline: Refrigerated
International: Frozen
Specimen Stability Whole Blood for RBC Folate:
Ambient: 3 Days
Refrigerated: 3 Days
Frozen: 30 Days
Serum for Serum Folate:
Refrigerated: 48 Hours
Frozen: 6 Months
Frozen samples should be thawed only once
DO NOT use frost-free freezers.
Avail. Stat NO
Analytic Time 7 Days
Reference Lab  Quest Diagnostic Lab-NI