Glucose Tolerance Test, 3 Hr Gestational (View in report form.)
CERNER / EPIC MNEMONIC:
GLUCOSE TOLERANCE 3 HR; GTT-3 HR
Specimen accepted daily, 24 hours
See Patient Instructions for Glucose Tolerance Test,¿A fasting glucose level is drawn from the patient.¿The patient (at 24-28 weeks of gestation) is given orally a 100 gram solution of glucose.¿The patient's blood is drawn again at 1 hour, 2 hours and 3 hours after the administration of glucose for a glucose assay.
Interpretive information (after 100 g glucose challenge at 24-28 weeks of gestation): Any two of four glucose values meeting or exceeding the limits below is indicative of gestational diabetes mellitus:
GTT FASTING 95 mg/dL
GTT 1 HR 180 mg/dL
GTT 2 HR 155 mg/dL
GTT 3 HR 140 mg/dL
Reference: Diabetes Care, 3 0(7Supp.1), S42-S47 (2007).