Ordering Recommendation

Preferred test when determining if hypoglycemia is from exposure to metformin. Serum or plasma is the preferred specimen for correlating drug use with hypoglycemia.

Mnemonic
METFORM SP
Methodology

Quantitative High Performance Liquid Chromatography-Tandem Mass Spectrometry

Performed

Varies

Reported

7-10 days

New York DOH Approval Status
This test is New York DOH approved.
Specimen Required
Patient Preparation
Collect

Plain Red, Lavender (K2EDTA), or Pink (K2EDTA).

Specimen Preparation

Separate from cells ASAP or within 2 hours of collection. Transfer 1 mL serum or plasma to an ARUP Standard Transport Tube. (Min: 0.3 mL)
Test is not performed at ARUP; separate specimens must be submitted when multiple tests are ordered.

Storage/Transport Temperature

Refrigerated. Also acceptable: Room temperature or frozen.

Unacceptable Conditions

Separator tubes.

Remarks
Stability

Ambient: 1 month; Refrigerated: 1 month; Frozen: 2 years

Reference Interval

By report

Interpretive Data



No compliance statements are in use for this test.

Note
Hotline History
N/A
CPT Codes

80375 (Alt code: G0480)

Components
Component Test Code* Component Chart Name LOINC
0092391 Metformin Quantitative, Serum or Plasma 35698-0
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
Aliases
  • Glucophage
Metformin Quantitative, Serum or Plasma

National Medical Services (NMS)