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.

Please print, complete and submit the Advance Beneficiary Notice 
(ABN) along with the Laboratory Requisition before shipping the 
specimen.

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

Sample
Processing:

Centrifuge within one hour of draw time.
Centrifuge at 3000 RPM for 10 minutes.
Label transport tube with two patient identifiers, date and time of 
collection.

Sample
Storage:

Refrigerate.

Transport
Instructions:

Transport in cooler with refrigerated coolant packs.
Place requisition into outside pocket of bag.
Place specimen into zip-lock type bag, seal bag.

CPT Code:

82947

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