Glucose

Label Mnemonic:	GLU
Epic code:	LAB82
Order form:	Laboratory Requisition
Supply order:	Supply Order Form
Billing:	Billing Policies
CPT code:	82947

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:

65-139 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, 
2005)

Pediatric Reference Ranges:

Age            Range  Units
0-1 month      50-99  mg/dL
1 month-adult  65-139 mg/dL

Critical value (0-1 month): <50 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.

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:

Hexokinase/UV test

Sample Processing:

Centrifuge at a speed and time necessary to get barrier separation of plasma/serum and cells within 1 hour of collection. Send specimen in original tube. Do Not transfer to another tube.
Each sample must be labeled with at least TWO full patient identifiers (First/Last Name & DOB are sufficient for non-UIHC affiliated clients) to avoid sample rejection/delays.

Sample Storage:

Refrigerate.
All sample storage requirements are intended for delivery to UIHC within 24 hours of collection for testing. If samples won't arrive in this time period, please call the UIHC Core Lab for alternative storage/shipping instructions (319-356-3527).

Transport Instructions:

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