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Folate, Serum/Plasma

Test ID: FOL S
Orderable by Ontario ND

Test

Aliases/Synonyms

Pteroylglutamic Acid; Folic Acid

Method

Chemiluminescence

Report Includes

Folate

Specimens

Serum; Plasma (heparin)

Clinical Utility

Folate measured in Erythrocytes is the test of choice to evaluate nutritional status – serum Folate may be misleading, especially non-fasting borderline results.

Test Location

St. Michael's Hospital, 30 Bond Street, Toronto ON M5B 1W8

Test Version

14-Jun-2024

Specimen

Specimens

Serum; Plasma (heparin)

Sample Volume

1 mL

Patient Preparation

Fasting. Serum folate may be falsely elevated in non-fasting specimens.

Collection & Handling

Collection Instructions

Avoid hemolysis.

Handling Information

Separate serum within 2 hours of collection. Store and send frozen.

Stability

Ambient 8 hours
Refrigerated 7 days
Frozen 3 Months

Rejection Criteria

Hemolysis Gross

Test Version

14-Jun-2024

Performance / Interpretation

Method

Chemiluminescence

Turnaround Time

5 days

Results

Name Units Reference Range Conversion Factor
Folate nmol/L
  • >13.4
ng/mL x 2.265

Test Location

St. Michael's Hospital, 30 Bond Street, Toronto ON M5B 1W8

Test Version

14-Jun-2024

Interface / Setup

HL7 Interface Codes

Order Code Result Codes Units
FOL S 20890Folate Serum nmol/L

Test Version

14-Jun-2024