New Search

Laboratory Test Directory

Gestational Diabetes Glucose Tolerance (Updated)

Components

Name Method Department Units
Glucose Fasting, Gestational Tolerance Enzymatic, reflectometry
Core Lab, Chemistry, Routine

Specimen Requirements

Plasma Spun, Serum Spun

Container Type Container Size Specimen Volume
Preferred

Green tube (Lithium heparin), No Gel

3 mL 3 mL
Alternate

Green tube (Lithium heparin), with Gel

3 mL 3 mL
Alternate

Green tube (Lithium heparin), No Gel

Micro sample tube 1 mL
Alternate

Green tube (Lithium heparin), with Gel

Micro sample tube 0.3 mL
Alternate

Red tube, (no anticoagulant), No Gel

3 mL 3 mL
Alternate

Gold tube, (SST) with Gel

3.5 mL 3.5 mL
Stability

Refrigerated - 24 hour(s)

Specimen Preparation

  • Centrifuge within 1 hour, separate supernatant and refrigerate

Whole Blood with Fluoride

Container Type Container Size Specimen Volume
Preferred

Gray tube (Sodium Fluoride)

2 mL 2 mL
Alternate

Gray tube (Sodium Fluoride)

Micro sample tube 1 mL
Stability

Refrigerated - 24 hour(s)
Room temperature - 24 hour(s)

Specimen Preparation

  • Mix by gentle inversion immediately after collection
  • Transport to the lab immediately after collection
  • Do not spin and separate gray top tubes

Reasons for Rejection

  • Gross hemolysis
  • Not received at proper temperature
  • Not received within specified time frame

Comments

Can be performed on Inpatients 7 days a week-notification to the Lab helpful but not required. Outpatient Laboratory collection and testing MUST be performed M-F and MUST be scheduled with Central Scheduling. "Close To Home" (offsite) collection can be scheduled by calling the site directly. Patient should fast at least 8 hours with no caloric intake. Analysis of testing collected in Sodium Fluoride is limited to glucose and lactate only. No other routine analytes are possible. All glucose samples not separated from cells within 1 hour must be drawn in a gray top tube.

CPT Code

  • 82952
  • 82951