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Metformin, serum or plasma-994

Test info

Test name:

Metformin, serum or plasma

Test number:

994

Excellian order number:

LAB994

Abbreviation:

MSO

Alternate names:

Glucophage

Specimen

Specimen type:

Serum

Collection container:

Red serum vial/tube, 5 mL

Volume:

1.0 mL

Minimum volume:

0.3 mL

Processing instructions:

Allow sample to clot for a minimum of 30 minutes
Spin within two (2) hours of sample collection
Transfer serum to a Transfer vial/tube with cap - 12mL (LabCorp), labelled as serum

Transport container:

Transfer vial/tube with cap - 12mL (LabCorp)

Alternate specimen type:

EDTA plasma

Alternate collection container:

Lavender (EDTA), 4mL

Alternate collection instructions:

Immediately following collection, mix by inverting 8 - 10 times to prevent clotting

Alternate processing instructions:

Spin within two (2) hours of sample collection
Transfer plasma to a Transfer vial/tube with cap - 12mL (LabCorp), labelled as EDTA plasma

Transport and stability:

Refrigerated (preferred) – 30 days

Ambient - 30 days

Frozen – 24 months

Reason for rejection:

Specimens collected or recieved in gel separation tubes (SST or PST)

Performance

Performing lab:

NMS (2740SP) via LabCorp (009985): R-NX

TAT:

7 days

Method:

High Performance Liquid Chromatography/Tandem Mass Spectrometry (LC-MS/MS)

Clinical and Interpretive info

Reference ranges:

Therapeutic range: Approximately 1 - 2 µg/mL

Billing

CPT codes:

80375

Tracking

Date created:

02/21/2022

Review date:

01/11/2024