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Test Code GTT 100 gram Gestational Glucose Tolerance Test, 3 Hour Gestational, Plasma or Serum

Performing Laboratory

NRL-Chemistry

Methodology

Oxygen Rate

Specimen Requirements

Submit only 1 of the following specimens:

 

Specimen Type: Plasma

Container/Tube: Light-green top (lithium heparin)

Specimen Volume: 2 mL

Collection Instructions:

No caloric intake at least 8 hours prior to collection

1. Draw a Fasting Glucose specimen
2. Administer 100 g of glucose solution orally to Pregnant female. Glucola should be ingested within 5 minutes, If patient cannot ingest entire bottle in 5 minutes, or vomits, test will need to be repeated. 
3. Subsequent specimens should be drawn at 1, 2 and 3-hours after administration of dose.
4. Label specimens appropriately (with corresponding draw time).

 

Specimen Type: Serum

Container/Tube: Gold top, serum gel

Specimen Volume: 2 mL

Collection Instructions:

No caloric intake at least 8 hours prior to collection

1. Draw a Fasting Glucose specimen
2. Administer 100 g of glucose solution orally to Pregnant female. Glucola should be ingested within 5 minutes, If patient cannot ingest entire bottle in 5 minutes, or vomits, test will need to be repeated. 
3. Subsequent specimens should be drawn at 1, 2 and 3-hours after administration of dose.
4. Label specimens appropriately (with corresponding draw time).

 

Reference Values

An interpretive report will be provided.

Day(s) Test Set Up

Monday through Sunday

Turnaround Time:

Routine-shift

Specimen Transport Temperature

Refrigerate

Test Classification and CPT Coding

82951-Glucose tolerance, 3 specimens
82952-Glucose tolerance, each additional specimen