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Test Code FBS Glucose (Fasting), Plasma or Serum

Methodology

Oxygen Rate Method Using a Glucose Oxygen Electrode
Used in the diagnosis and treatment of carbohydrate metabolism disorders including diabetes mellitus, neonatal hypoglycemia, idiopathic hypoglycemia, and pancreatic islet cell carcinoma.

Performing Laboratory

St. Joseph Hospital

Specimen Requirements

Submit only 1 of the following specimens:

 

Plasma

Collect blood in a light green (Lithium heparin-PST) tube.  Centrifuge and send 0.5 mL plasma refrigerated.

 

Plasma
Draw blood in a grey-top (potassium oxalate/sodium fluoride) tube(s). Spin down and send 0.5 mL of potassium oxalate/sodium fluoride plasma refrigerated.
Note:  1. Indicate plasma on request form.
2. Label specimen appropriately (plasma).

 

Serum
Draw blood in a plain, red-top tube(s). Spin down and send 0.5 mL of serum refrigerated.
Note:  1. Indicate serum on request form.
2. Label specimen appropriately (serum).

Reference Values

Newborns

Fasting:  70-100 mg/dL

Nonfasting:  74-140 mg/dL

Critical values:  <30 mg/dL or >300 mg/dL


Adults
Fasting:  70-100 mg/dL
Random:  74-140 mg/dL
Critical values:  <50 mg/dL or >450 mg/dL

Day(s) Test Set Up

Monday through Sunday

Available STAT

Test Classification and CPT Coding

82947