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HelpTest Code GLU.1 GLUCOSE LEVEL
Methodology
Colorimetric
Useful for diagnosing and managing diabetes mellitus and other carbohydrate metabolism disorders including gestational diabetes, neonatal hypoglycemia, idiopathic hypoglycemia, and pancreatic islet cell carcinoma.
Specimen Requirements
Submit only 1 of the following specimens:
Preferred:
Serum
Serum Gel Tube
Container/Tube: Serum gel tube(s)
Specimen Volume: 1 mL (minimum volume: 0.5 mL) of
serum-Grossly hemolyzed specimen is not
acceptable.
Collection Instructions: Spin down within 1 hour of draw.
Note: Label specimen appropriately (serum).
Alternate:
Serum
Plain, Red-Top Tube
Container/Tube: Plain, red-top tube(s)
Specimen Volume: 1 mL (minimum volume: 0.5 mL) of
serum-Grossly hemolyzed specimen is not
acceptable.
Collection Instructions: Spin down within 1 hour of draw.
Note: Label specimen appropriately (serum).
Alternate:
Plasma
Container/Tube: Green-top (lithium heparin) tube(s) or grey-top (potassium oxalate/sodium fluoride) tube(s)
Specimen Volume: 1 mL (minimum volume: 0.5 mL) of plasma-Grossly hemolyzed specimen is not acceptable.
Collection Instructions: Spin down within 1 hour of draw.
Note: 1. Grey-top tube is stable for 24 hours after drawing specimen.
2. Label specimen appropriately (plasma).
Day(s) Test Set Up
Monday through Sunday
Reference Values
<1 month: 40-100 mg/dL
≥1 month:
Non-Diabetic
Fasting: 60-99 mg/dL
Random/post-meal: 80-139 mg/dL
Pre-Diabetes Diagnosis
Fasting: 100-125 mg/dL
Random/post-meal: 140-199 mg/dL
Critical values (automatic call-back):
<1 month: <35 mg/dL or >150 mg/dL
≥1 month: <50 mg/dL or >500 mg/dL
Performing Laboratory
Logan Health Medical Center-Chemistry
Test Classification and CPT Coding
82947
Specimen Transport Temperature
Refrigerate