Glipizide, serum or plasma-1766

Test info

  
Glipizide, serum or plasma
  
1766
  
LAB1766
  
Glipizide
  
Glucotrol
  

Therapeutic drug management

Specimen

  
Serum
  
  
2.0 mL
  
0.5 mL
  

Trough levels are most reproducible

  
  1. Allow sample to clot
  2. Spin within two (2) hours of sample collection
  3. Transfer serum to a Serum/plasma transfer vial/tube (MedTox), labelled as serum
  
  
Lithium heparin (Li hep) plasma
Sodium heparin (Na hep) plasma
  

Dk green heparin (Li or Na), no gel

  

  

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

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

Refrigerated (preferred)

Ambient - <3 days

Frozen - OK

  

Gel-barrier tubes are not recommended

Performance

  
MedTox Laboratories (412): R-MX
  
Varies
  
7 days
  

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

Clinical and Interpretive info

  

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

  

Toxic range has not been established

Billing

  
G0480
  
Yes
  

Tracking

  
11/15/2021
  
01/03/2024
  
01/03/2024