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HelpTest Code FMETN Metformin, Plasma
Specimen Required
***Must submit one specimen per order. Specimens cannot be shared between multiple orders.***
Specimen Type: Plasma
Collection Container/Tube: Lavender top or pink top (EDTA) (Plasma gel tubes are not acceptable)
Submission Container/Tube: Plastic vial
Specimen volume: 1 mL
Collection instructions:
1. Draw blood in an EDTA (lavender top or pink top) tube.
2. Centrifuge and aliquot 1 mL of plasma into a preservative-free plastic vial.
3. Send refrigerated (preferred)
Specimen Stability Information: Refrigerated (preferred) 30 days/Ambient 30 days/Frozen 2 years
Method Name
High Performance Liquid Chromatography/Tandem Mass Spectrometry (LC-MS/MS)
Reporting Name
Metformin, PlasmaSpecimen Type
Plasma EDTASpecimen Minimum Volume
0.5 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Plasma EDTA | Refrigerated (preferred) | 30 days | |
| Ambient | 30 days | ||
| Frozen | |||
Reject Due To
| Polymer gel separation tube (SST or PST) | Reject |
Reference Values
Reporting limit determined each analysis.
Units: mcg/mL
Therapeutic range: Approximately 1-2 mcg/mL.
Metformin associated lactic acidosis generally has been associated with Metformin plasma concentrations exceeding 5 mcg/mL.
Day(s) Performed
Monday through Sunday
Report Available
6 to 12 daysPerforming Laboratory
NMS LabsCPT Code Information
80299
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| FMETN | Metformin, Plasma | 35698-0 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| Z3525 | Metformin | 35698-0 |