Label Mnemonic: GLU
Epic code: LAB82
Downtime form: A-1a Doctor/Provider Orders - Pathology Core and Specialty Care Nursery
6240 RCP
Collection Medium:
Plasma Separator Tube 4.5 mL
Alternate Collection Media:
Call laboratory for additional acceptable specimen collection containers.
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:
65-139 mg/dL

Critical value (1 month-adults): <50 mg/dL and >450

1 month - Adult reference ranges updated 12/19/2017.

Reference Range is for a random glucose concentration. 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, 

Pediatric Reference Ranges:

Age            Range  Units
0-1 month      40-99  mg/dL
1 month-adult  65-139 mg/dL

Critical value (0-1 month): <40 mg/dL and >300
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 

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 
Hexokinase/UV test
CPT Code:
See also:
Glucose-Other, Body Fluid