Insulin Response to Glucose, 2 hour

Last Modified: 11/14/2019 10:13:34 AM

Medical Necessity Documentation:  
Client Notes:

Please remind patients of the time frame this testing will take, and that they need to be at the drawsite in plenty of time before closing.

On the PRMC Campus, tolerance collections are performed at Parkview Outpatient Center, 11141 Parkview Plaza Drive, Suite 100 Fort Wayne, IN 46845 Entrance 3 

Patient Preparation: Fasting

Patient should discontinue taking Biotin, Vitamin B7, or Vitamin H 48 hours before getting blood drawn.
Specimen Requirements: 1.0 mL Serum in a SST Gold Top Tube (One For Each Insulin Timed Collection)
Collection Instructions: Centrifuge tubes and separate from cells within 2 hours

Instruct patients that they CANNOT share glucola beverage with anyone as it is for diagnostic purposes. 

If patient has fasting test(s) ordered, they must be collected prior to administering Glucola beverage.

If possible, medications should be noted on the order

1. Collect Fasting Specimen
2. Administer the 75 grams of Glucola beverage by having the patient consume the beverage within 5 minutes
3. Start timing the test after the patient has finished the drink.
4. Collect subsequent  timed specimens will be drawn at specific time intervals, based on the test ordered

For Child Glucola Dosages refer to Addendum A
Minimum Volume: 0.3 mL Serum per specimen
Transport & Storage: Temperature/Stability: 2 days Refrigerated
Reference Range: Refer to report for reference ranges
Critical Ranges:  
Test Comments: Patients taking vitamin supplements containing doses of >5 mg/day may have falsely decreased test results generated.
Methodology: Immunometric Assay
Clinical Significance:  
Custom Panel: No


Days Performed: Sunday, Monday, Tuesday, Wednesday, Thursday, Friday, Saturday
Sites Performed: Parkview Regional Medical Center
PHL Test Code: ITOL2
EPIC Test Code: LAB2804
Alternate Test Names: Insulin Response to Glucose, 2 hour - No Glucose; Insulin Tolerance Test - 2 hour
Included Tests: 2 hour Insulin; Fasting Insulin
CPT Coding: 83525 x 2

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