2 Hour Glucose OGTT (75g ADA) GLU 2 H

Synonyms

Allscripts (AEHR) Order Name

Glucose 2 Hours

Sunrise Clinical Manager (SCM) Order Name

Glucose 2 Hours

EPIC Order Name

2 Hour Glucose OGTT (75g ADA)

Clinical Info

For nonpregnant individuals. 75-g oral glucose tolerance test (OGTT)

Specimen Type

Blood

Specimen Volume

1 mL of potassium oxalate/sodium fluoride plasma

Container

Gray Top Tube

Collection Instructions

1. Patient should be instructed to fast for at least eight hours prior to collection of specimens.
2. Patient should be instructed to refrain from smoking and drinking coffee just before and during test.
3. Draw blood specimen for a fasting glucose.
4. After drawing fasting specimen, give the patient a 75 g dose of Glucola (patient must drink entire beverage within 5 minutes).
5. Draw blood specimens at 2 hours post Glucola ingestion.
Note:  Label specimens appropriately (fasting, and 2 hour)

Transport Instructions

Refrigerate

Specimen Stability

Methodology

Enzymatic Method

Days Performed

Monday to Sunday

Performing Laboratories
  • Core Lab Laboratory
  • Glen Cove Hospital Laboratory
  • LIJ Hospital Laboratory
  • Northern Westchester Hospital Labs
  • Northwell Health-CFAM
  • Peconic Bay Medical Center Laboratory
  • Phelps Memorial Hospital Labs
  • SIUH North Laboratory
  • SIUH Pouch Terminal Laboratory
  • SIUH Prince’s Bay Division Laboratory

CPT

82952

PDM

5300480

Result Interpretation

American Diabetes Association (ADA) diabetes diagnosis criteria for 2-h glucose during a 75-g oral glucose tolerance test (OGTT)

Prediabetes: 140 mg/dL to 199 mg/dL

Diabetes: ≥200 mg/dL

Diabetes Care 2024;47(Supplement_1):S20–S42
https://doi.org/10.2337/dc24-S002

Forms

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