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Glipizide, serum or plasma-1766

Test info

Test name:

Glipizide, serum or plasma

Test number:

1766

Excellian order number:

LAB1766

Abbreviation:

Glipizide

Alternate names:

Glucotrol

Useful for:

Therapeutic drug management

Specimen

Specimen type:

Serum

Collection container:

Red serum vial/tube, 5 mL

Volume:

2.0 mL

Minimum volume:

0.5 mL

Collection instructions:

Trough levels are most reproducible

Processing instructions:

Allow sample to clot
Spin within two (2) hours of sample collection
Transfer serum to a Serum/plasma transfer vial/tube (MedTox), labelled as serum

Transport container:

Serum/plasma transfer vial/tube (MedTox)

Alternate specimen type:

Lithium heparin (Li hep) plasma
Sodium heparin (Na hep) plasma

Alternate collection container:

Dk green heparin (Li or Na), no gel

Alternate collection instructions:

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

Alternate processing instructions:

Spin within two (2) hours of sample collection
Transfer plasma to a Serum/plasma transfer vial/tube (MedTox), labelled as the appropriate plasma type

Transport and stability:

Refrigerated (preferred)

Ambient - <3 days

Frozen - OK

Reason for rejection:

Gel-barrier tubes are not recommended

Performance

Performing lab:

MedTox Laboratories (412): R-MX

Days set up:

Varies

TAT:

7 days

Method:

Liquid chromatography/tandem mass spectrometry (LC/MS-MS)

Clinical and Interpretive info

Reference ranges:

Plasma insulin concentrations have been shown to increase only when plasma glipizide concentrations exceeded 200 ng/mL.

Results that require action (critical):

Toxic range has not been established

Billing

CPT codes:

G0480

Subject to medical necessity (Y/N):

Yes

LCD/NCD:

Medical necessity

Tracking

Date created:

11/15/2021

Revised date:

01/03/2024

Review date:

01/03/2024