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Epic Code LAB69 Folate, Blood Level

Important Note

  • Fasting specimen highly recommended (see reference range), but not required
  • Test cannot be ordered as an add-on

Test Name Alias

Folate Blood Level | Folic Acid | 1037

Interface Order Alias


Collection Instructions

Specimen Collection: Blood


Container(s): Gold Top (Serum Separator-SST Gel)

  • Preferred Volume to Collect: 5.0 mL
  • Minimum Volume to Collect: 2.0 mL
  • Neonate Volume to Collect: 0.5 mL
  • Capillary collect ok? Yes
  • Microtainer acceptable: Yes


Collection Instructions:

  • Fasting specimen highly recommended (see reference range)
  • After collection, gently invert tube 8-10 times.
  • Avoid prolonged exposure to light (minimal UV light exposure). 
  • Specimen should be processed within 2 hours – See Processing Instructions.


Processing Instructions (Laboratory, Outpatient or Off-site collection)

  • Processed Specimen: Serum
  • Centrifuge/Spin: Yes
  • Aliquot: Yes
  • Processes Minimum Volume: 1.0 mL Serum
  • Processing Instructions:
    • Allow blood to clot for 30 minutes in a vertical position and centrifuge within 2 hours.
    • Avoid prolonged exposure to light (minimal UV light exposure)
  • Transport Temperature: Refrigerated


Avoid prolonged exposure to light. Protect from light (minimal UV light exposure): Please routinely take general precautions to minimize the specimen’s exposure to light. These precautions should include:

  1. After collection, placing specimens out of direct sunlight and overhead lighting.
  2. Centrifuging and placing specimens, as appropriate, in the refrigerator as soon as possible.
  3. Transporting the specimens in opaque containers (courier coolers).
  4. Processing specimens in lab ASAP.
  5. Storing completed specimens, as appropriate, in routinely non-lighted refrigerator.

Specimen Stability

Ambient: 2 hours

Refrigerate: 48 hours

Frozen: aliquot serum for longer storage

Laboratory Retention: 72 hours

Cannot be added on due to specimen stability

Test Frequency

Available daily, usual TAT 1 day.

Reference Range

4.0 - 20.0 ng/mL for fasting patient.


Non-fasting patient:

Patient was not fasting.  Reference ranges haven't been established for non-fasting patients. Due to folate's high bioavailability, non-fasting levels do not represent an accurate assessment of the patient's folate status. Fasting levels are strongly encouraged.  Interpret with caution.

Performing Department


Performing Department Laboratory Location

Corewell Health Reference Laboratory, Grand Rapids, MI

Corewell Health Big Rapids Laboratory, Big Rapids, MI
Corewell Health Ludington Laboratory, Ludington, MI
Corewell Health Pennock Laboratory, Hastings, MI
Corewell Health Reed City Laboratory, Reed City, MI
Corewell Health Greenville Laboratory, Greenville, MI


Electrochemiluminescence Immunoassay (ECLIA)



CDM Code


Epic Test ID



Folate Lvl: 2284-8

Mayo Access Code


Reviewed Date


Updated Date

3/14/2024 - Reference Range