Test Code GLUF Glucose, Fasting, Plasma or Serum
Specimen Requirements
Submit only 1 of the following specimens:
Plasma
Draw blood in a green-top (lithium heparin) tube(s) or a plasma gel
tube(s) from a fasting patient (12 hour). Spin
down (maximum: 2 hours) and send 1 mL of lithium heparin
plasma refrigerated.
Note: 1. Indicate plasma on request form.
2. Label specimen appropriately (plasma).
Serum
Draw blood in a plain, red-top tube(s) or a serum gel tube(s) from a fasting patient (12 hour). Spin down (maximum: 2 hours) and send 1 mL of serum refrigerated.
Note: 1. Indicate serum on request form.
2. Label specimen appropriately (serum).
Specimen Stability
Refrigerated - 7 days
Performing Laboratory
Conway Regional Clinical Laboratory Services
Reference Values
0-1 year: 40-90 mg/dL
≥1 year: 70-105 mg/dL
Critical values (automatic call-back)
0-1 year: <40 mg/dL or >200 mg/dL
≥2 years: <40 mg/dL or >450 mg/dL
Note: Glycolysis due to failure to refrigerate specimen or to send it to the laboratory immediately may result in false-negative results. Failure to observe dietary restrictions may elevate glucose levels.
Methodology
Hexokinase, Ultraviolet
Day(s) Test Set Up
Monday through Sunday
Test Classification and CPT Coding
82947