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Insulin Resistance with Glucose - 2 Hour

Important Note

Draw fasting glucose and insulin specimen & finger stick glucose
Give 75 gram glucola
Collect blood at the following intervals:

Fasting Glucose and Insulin

1 Hour Glucose and Insulin

2 Hour Glucose and Insulin

Icon & Photos

Mint Green Top (Lithium Heparin Gel) & Lavender EDTA Tube

Specimen Requirements

Preferred:
Container/Tube: Mint Green Top (Lithium Heparin Gel) & Lavender EDTA Tube for Initial testing. Same 2 tubes for 1 and 2 hour testing
Minimum Volume: 1.0 mL Serum & 1 mL EDTA Whole Blood
Collection Instructions: The patient will have the initial Insulin Resistance bloodwork collected then have either a 75g dose of glucola or a meal (**Consult the ordering physician for which.) Children glucola dosage is SPECIALLY CALCULATED. Then the patient will be drawn at 1 and  2 hours later for the second and third glucose and insulin.
Also Acceptable:
Container/Tube: Gold Top (SST-Gel)

Specimen Stability

Ambient: 8 hours
Refrigerate: 48 hours
Frozen: aliquot for longer storage

Reference Range

Fasting Glucose 70-125 mg/dL
1 hour Glucose 70-199 mg/dL
2 hour Glucose 70-199 mg/dL
Fasting Insulin 1.9-23.0

uIU/mL
1 hour Insulin No Ref Range  
2 hour Insulin No Ref Range  

The ADA criteria for prediabetes is a fasting plasma glucose of 100-125 mg/dL or 2hr post-glucose sample of 140-199 mg/dl

Methodology

See individual tests for Methodology

CPT

83525(x3),82947(x3)

Lab Handling

No finger stick needed. Draw a fasting Glucose and Insulin, a 1 hour Glucose and Insulin, and a 2 Hour Glucose and Insulin.