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Glucose Tolerance - 3 Hr
MessageFor Specimen Integrity during Extreme Weather see the “Lockbox Usage in Extreme Weather” document at the top of this page.
It is imperative that each sample tube is clearly labeled as to the TIME of collection
It is imperative that each sample tube is clearly labeled as to the TIME of collection
Test Code
GTOL3
Alias/See Also
70863;
3 hr GTT (pregnant);
OB Glucose (4 Specimens) (comment: F, 1hr, 2hr, 3hr.)
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 (Light Green Top)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.
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
AU
Report Available
daily
Performing Laboratory
CompuNet Clinical Laboratories, LLC
2308 Sandridge Drive
Moraine, OH 45439
Last Updated: November 22, 2021
