Specimen

Plasma

Collection Medium:

Alternate
Collection Media:

Call laboratory for additional acceptable specimen collection 
containers.

Minimum:

2 mls in light green top tube or 1 microtube for pediatric patients.

Testing Schedule:

24 hrs/day, 7 days a week, including holidays.

Analytic Time:

2 hours (upon receipt in laboratory)

Reference Range:

Fasting: 65-99 mg/dl; see appendix for pediatric normal range.

Critical value (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

Comments:

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

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:

Enzymatic

CPT Code:

82947

See Additional Information:
Chemistry Critical Lab Values
Chemistry Pediatric Reference Ranges
Fasting Specimen Requirements