Specimen:

Plasma

Alternate
Collection Media:

Call laboratory for additional acceptable specimen collection 
containers.

Minimum:

2 ml; gray (sodium fluoride) top
(or 1 microtube for pediatric patients) per specimen.

Testing
Schedule:

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

Analytic Time:

2 hours (upon receipt in laboratory)

Reference Range:

Valid results depend on adequate patient preparation.  For patient
preparation and interpretation see DIABETES 18:299, 1969.

Comments:

Collect all specimens in gray top tube on patient care area and hold 
(sodium fluoride anticoagulant).  Deliver all specimens simultaneously. 
Microtube specimens must be scheduled with the lab in advance and 
delivered immediately after drawing.

CPT code is 82951 for first 3 specimens

CPT code = 82952 for each additional specimen after 3

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:

See comments

See Additional Information:
Fasting Specimen Requirements