Glucose, 2HR Challenge

Centralized Core Laboratory:Chemistry

Test ID/Workstation: GL2HR ACHM1

Specimen Type: Blood

Tube Type: Green top (lithium or sodium heparin) tube

Collection Volume: 0.4 mL

Storage: Refrigerated

Availability: Mon-Fri

Methodology: Timed endpoint reaction using hexokinase

Special Instructions: Outpatients must be scheduled in advance. Patient should eat their usual diet for 3-5 days and fast 8 hours prior to testing. A fasting level will be drawn and must be < 125 mg/dL (glucometer) before proceeding. Glucose dose will be orally administered and blood will be collected at the 2 hour interval post glucose ingestion.

Lab/Phone: 330-543-8417

TAT: 1 hour/draw

Additional Info: Criteria for Diagnosis of Diabetes(2HR Challenge):

Fasting specimen (no caloric intake for at least 8 hours).
<100 mg/dl Normal
100-125 mg/dl Increased Risk for Diabetes
>125 mg/dl Diagnostic for Diabetes

2 Hour Specimen (post glucose administration).
<=139 mg/dl Normal
140-199 mg/dl Increased Risk for Diabetes
>=200 mg/dl Diagnostic for Diabetes

CPT Code: 82947, 82950

Specimen Collection Procedures
Glucose Tolerance Testing

Requisition Form
View and print a requisition form for this test

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330-543-1000 (operator)

(8 a.m.-4:30 p.m.)


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