Laboratory Test Detail

Last Updated: July 22, 2024 @ 9:13 am


Glucose Tolerance 3 HR

  • One Gray Top (1HR)
  • One Gray Top (2HR)
  • One Gray Top (3HR)
  • One Gray Top (FAST)

Also Acceptable:
  • One SST (1HR)
  • One SST (2HR)
  • One SST (3HR)
  • One SST (FAST)
  • Four 4 mL (Min:1 mL) Whole blood in Gray Top. Submit Refrigerated.

Also Acceptable:
  • Four 1 mL (Min:0.5 mL) Serum in SST. Submit Refrigerated.
  • Four 1 mL (Min:0.5 mL) Plasma . Submit Refrigerated. Submit in a Standard Transport Tube.
Special Handling:
  • Draw fasting specimen, then give 75gm glucola. At 1 hour draw "1 HR" post sample. At 2 hour draw "2 HR" post sample At 3 hour draw "3 HR" post sample.
    Label tubes "Fasting", "1 HR", "2 HR" and "3 HR".

    Other alternative samples:
    Green Top (Li Hep), Lavender EDTA, Pink EDTA, Red Top.
    If using alternative serum or plasma separate from cells ASAP.
    Serum or plasma stability: Ambient 8 hrs, RF 3 days, FZ 1 month
Rejection Criteria:
  • Hemolyzed specimens
  • Microbially Contaminated
  • Unlabled Specimens
Stability:Ambient: 1 Day(s); Refrigerated: 3 Day(s); Frozen: Unacceptable; Incubated: Unacceptable
  • Colorimetric
Reported:1-3 Day(s)
CPT Codes:
  • 82951
  • 82952
Interpretive Data:Please see report for interpretive data.

Criteria for the diagnosis of diabetes mellitus: 2 hour postload glucose of 200 mg/dl or greater using a 75g glucose load. ADA 2005
  • 10201 - GLUCOSE, FASTING
  • 10206 - GLUCOSE, 1HR
  • 10202 - GLUCOSE, 2HR
  • 10207 - GLUCOSE, 3HR
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