Pteroylglutamic Acid; Folic Acid
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Folate, Serum/Plasma
Test ID: FOL S
Orderable by Ontario ND
Test
Aliases/Synonyms
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
1-Mar-2023
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 | 48 hours |
| Frozen | 3 Months |
Rejection Criteria
| Hemolysis | Gross |
|---|
Test Version
1-Mar-2023
Performance / Interpretation
Method
Chemiluminescence
Turnaround Time
5 days
Results
| Name | Units | Reference Range | Conversion Factor | |
|---|---|---|---|---|
| Folate | nmol/L |
|
ng/mL x 2.265 | |
Test Location
St. Michael's Hospital, 30 Bond Street, Toronto ON M5B 1W8
Test Version
1-Mar-2023
Interface / Setup
HL7 Interface Codes
| Order Code | Result Codes | Units |
|---|---|---|
| FOL S | 20890Folate Serum | nmol/L |
Test Version
1-Mar-2023