Feb 8, 2018




Clinical Hub,Tools & Resources,UWHC Lab Test Directory,Chemistry

Glucose Tolerance, 3 hour

Glucose Tolerance, 3 hour (HCGLUTOL3) Chemistry Lab Test

Name: Glucose Tolerance, 3 hour

Test Name: Glucose Tolerance, 3 hour

Health Link Test Code: HCGLUTOL3

LIS Test Code: GLUTOL3

CPT Code(s): 82951, 82952

Test Component:

Fasting glucose, 60 min.,  2 hour, and 3 hour draw after administration of a glucose-containing solution.

Methodology: Hexokinase

Days Performed: Daily, 24 hours.

In-Lab Turnaround Time: 4 hours.

Stat In-Lab Turnaround Time: Not available stat.

Patient Preparation:

Patient should have nothing to eat or drink (except water) for a minimum of 8 hours before test.

Specimen: Blood

Collection Container: Green cap with yellow ring (PST)

Also Acceptable: Green top, Red cap with yellow ring (SST), Red top

Collection Instructions:

A fasting blood glucose specimen is drawn. The patient ingests a solution containing 100 gm of glucose. Blood samples are drawn at 60 minutes, 2 hours, and 3 hours post-ingestion.

Collection Volume: 1 mL

Pediatric Collection Volume: 0.3 mL

Stability Ambient:

2 days

Stability Refridgerated:

PST: 48 hours

SST: 4 days

Stability Frozen:

1 day

Sample Analyzed: Plasma or serum

Testing Volume: 0.5 mL

Pediatric Testing Volume: 0.1 mL

Specimen Processing:

Centrifuge. If a complete barrier has not formed, transfer cell-free plasma/serum to plastic vial. Refrigerate.

Specimen Transport:

Transport specimen to the laboratory. Transport with coolant pack if coming from clinic location.

Unacceptable Criteria:

Hemolyzed specimens or whole blood specimens greater than 2 hours old when received by the laboratory are not acceptable.

Critical Calls: yes