Glucose
Label Mnemonic: GLU
Epic Lab Code: LAB82
Downtime Form: A-1a General Laboratory Requisition
Chemistry
6240 RCP
356-3527
Specimen(s):
Plasma
Collection Medium:
Plasma Separator Tube 4.5 mL
Alternate Collection Media:
Call laboratory for additional acceptable specimen collection containers.
Minimum:
3 mL in light green top tube or 1 Microtainer®
Testing Schedule:
24 hrs/day, 7 days a week, including holidays.
Turn Around Time:
1 hour (upon receipt in laboratory)
Reference Range:
65-99 mg/dL Critical value (1 month-adults): <50 mg/dL and >450 The Expert Committee on the Diagnosis and Classification of Diabetes has defined impaired fasting glucose as greater than or equal to 100 mg/dL but less than 126 mg/dL. (Diabetes Care 28 (Suppl 1) S41, 2005) Pediatric Reference Ranges: Age Range Units 0-1 month 40-99 mg/dL 1 month-adult 65-99 mg/dL Critical value (0-1 month): <40 mg/dL and >300
Comments:
Fasting for at least 8 hours prior to collection is recommended.

Falsely low values may occur in specimens which are not separated promptly from RBC's.

This test is also performed in the Iowa River Landing (IRL) clinical laboratory (for specimens drawn at that site).
Test Limitations:
Icterus: No significant interference up to an I index of 60 (approximate conjugated and unconjugated bilirubin concentration: 60 mg/dL). Hemolysis: No significant interference up to an H index of 1000 (approximate hemoglobin concentration 1000 mg/dL). Lipemia (Intralipid): No significant interference up to an L index of 1000 (approximate triglycerides concentration 2000 mg/dL). There is poor correlation between turbidity and triglycerides concentration.
Methodology:
Hexokinase/UV test
CPT Code:
82947
 
See also:
Glucose-Other, Body Fluid