Laboratory Services

Updated Test Information:

Test Description
Folate
Synonym(s)

Folic Acid

Test ID
FOL
General Information

Samples for folate determinations should be collected from fasting persons.

Specimen Type

Serum

Alternate Specimen Type

Red

Specimen Requirements

SST
Aliquot Tube

Specimen Collection / Processing Instructions

SST - Samples should not be taken from patients receiving therapy with high biotin doses (i.e.greater than 5 mg/day) until at least 8 hours following the last biotin administration. Transfer separated serum or plasma to an aliquot tube.

Stability

2 hours at 20‑25 °C
48 hours at 2‑8 °C
28 days at ‑20 °C (± 5 °C).

Unacceptable Specimen Conditions

Hemolyzed samples

Methodology

Electrochemiluminescence immunoassay ECLIA

Estimated TAT

0-2 days

Testing Schedule

Monday-Saturday

CPT Code(s)

82746

Minimum Sample Volume

1 mL

Pediatric Min. Volume (if applicable)

500 uL

Reference Range

4.78-24.2 ng/mL

Performing Lab

Incyte Diagnostics

LOINC Code(s)

2284-8