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HelpTest Code 2 Hr Glu GLUCOSE TOLERANCE, 2 HR
Aliasis
2 hour Glucose Tolerance Test, 75 g (Care set)
Patient Preparation
8-14 hour fast after 3 days of normal carbohydrate (> 150 g/day) diet. Perform only if fasting glucose is < 150 mg/dL
Special Collection Instructions
1. Draw fasting venous specimen
2. Give 75 g glucola
3. Draw venous specimen at 2 hours post consumption
Collection Method
Venous collection
Minimum Volume
0.5 mL
Container
Lt Green / Plasma Separator / Lithium Heparin
Preferred Specimen
Light Green Top (lithium heparin) plasma
Acceptable Specimen(s)
Serum:
-Gold top SST
-Red Top
Plasma:
-Lt Green Top
Reference or Target Ranges
|
Fasting: |
70-99 mg/dL |
|
2 hour (adult): |
70-139 mg/dL |
|
Impaired Tolerance: |
|
|
Fasting: |
100-125 mg/dL |
|
2-hour: |
140-199 mg/dL |
|
Diabetes: |
|
|
Fasting: |
>125 mg/dL |
|
2-hour: |
>199 mg/dL |
Reportable Units
mg/dL
Critical Value
|
Low |
< 40 mg/dL |
|
High |
> 450 mg/dL |
Reasons for Rejection
|
Hemolysis Threshold: |
1000 mg/dL |
|
Icterus Threshold: |
30 mg/dL |
|
Lipemia Threshold: |
1000 mg/dL |
|
Other: |
QNS, contaminated, improperly labeled, improper specimen type |
Specimen Stability
|
Ambient |
8 Hours |
|
Refrigerated |
72 Hours |
Performance Information
|
Days and Time Performed |
24/7 |
|
Expected Turn Around Time |
Stat: 1 Hour, Routine: 4 Hours |
|
Stat Availability |
Yes |
|
Performing Bench |
CRMC Chemistry |
|
Methodology/Method Description |
Atellica |
Methodology/Method Description
Atellica CH Analyzer
CPT Codes
82951