Glucose Tolerance - 3 Hr

Message
It is imperative that each sample tube is clearly labeled as to the TIME of collection

Test Code
70863

Alias/See Also
3 hr GTT (pregnant); OB Glucose (4 Specimens) (comment: F, 1hr, 2hr, 3hr.)

CPT Codes
82951;82952

Preferred Specimen
serum

Minimum Volume
1 mL

Other Acceptable Specimens
plasma from Lithium Heparin tube


Instructions
Barrier tubes (serum separator tubes or plasma separator tubes) are preferred. If non-barrier tubes are utilized, the serum/plasma must be removed immediately after centrifuging and placed in a screw-cap transfer tube.

Collection notes: Avoid hemolysis. Invert tubes at least 8 times. Allow to clot in an upright position for 30 minutes. Within 2 hours, centrifuge tubes 10 minutes. Keep tightly stoppered.

Do NOT re-centrifuge tubes. Do NOT freeze the primary collection tube.

CLEARLY label each tube with the Time and Hour of collection.

Transport Container
Original tube preferred, may be sent in a screw-top transfer tube.


Transport Temperature
Room Temperature or Refrigerated


Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Hemolysis, Lipemia, incorrect specimen type, insufficient sample volume, improper storage conditions, contaminated sample.


Methodology
Spectrophotometric

Setup Schedule
24/7
AU

Report Available
daily

Performing Laboratory
CompuNet Clinical Laboratories, LLC
2308 Sandridge Drive
Moraine, OH 45439



The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.