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Folate, Serum


The serum folate assay is a competitive binding receptor assay.

Test Utility

This test is used to detect folate deficiency in human serum. Folate deficiency is associated with many disorders including anemias, neuropsychiatric, dementia, alcoholism and neural tube defects in the fetus.

Specimen Collection and Preparation

Fasting serum or plasma sample in the following tubes:

  • Serum separator tube (gold or tiger top)

  • Lithium Heparin (green top)

Specimen Storage and Stability

Store serum or plasma at the following temperatures:

  • Refrigerated: 2°C to 8°C for up to 48 hours

  • Frozen: -20°C or lower for up to 6 months. Frozen samples should be thawed only once.

Specimen Rejection

  • Insufficient sample volume

  • Sample not stored at proper temperature

  • Frozen whole blood

  • Severely hemolyzed samples

  • Severely lipemic specimens

  • Specimen labeled incorrectly or not labeled

Reference Pages


Monday – Saturday

Result available within 24 hours of receipt in laboratory

NOTE: Specimens are refrigerated (2-8°) for 7 days before disposal


Vibra Health Laboratory

1307- A, Allen Dr

Troy, MI 48083

(248) 846-0663

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