Test Overview
Test Usage
Determine glucose level when patient is undergoing ascorbic acid therapy, monitor insulin therapy, evaluate carbohydrate metabolism.
Reference Range *
American Diabetes Association Reference Ranges:
Fasting Glucose: <110 mg/dl (Normal); 110 - 126 mg/dl (Impaired); >=126 mg/dl (Provisional Diagnosis)
Random Glucose: >= 200 mg/dl (Provisional Diagnosis)
Glucose Tolerance Test, 75g load, 2 hr: <140 mg/dl (Normal); 140 - 200 mg/dl (Impaired); >=200 mg/dl (Provisional Diagnosis)
Gestational Diabetes, 50 g load, 1 hr: <140 mg/dl
Gestational Diabetes, 100 g load: Fasting <95 mg/dl; 1 hr <180 mg/dl; 2 hr <155 mg/dl; 3 hr <140 mg/dl.
* Reference ranges may change over time. Please refer to the original patient report when evaluating results.
Test Details
Days Set Up
Daily, 24 hours
Analytic Time
2 hours
Soft Order Code
GLGEM
MiChart Code
GLGEM
Laboratory
Chemical Pathology
Section
Automation
Specimen Requirements
Fasting Specimen
12 hour fasting specimen is recommended; 8 hour fasting specimen is acceptable.
Normal Volume
0.5 mL whole blood
Minimum Volume
0.25 mL whole blood
Billing
CPT Code
82947
Fee Code
20502
LOINC
41652-9