Result Test Name
SPECIMEN 3
Laboratory
QUEST LAB
Result Test Code
12325107710
Laboratory Test Name
QUEST GLUCOSE TOLERANCE TEST 4 SPECIMENS
Reportable Test Name
-
Result LOINC
50213-8
Collection Container
K OXALATE AND NA FLUORIDE - GREY TOP
Units
-
Collection Requirements
Preferred Specimen(s) Four - 1 mL plasma specimens collected in fluoride/oxalate (gray-top) tubes Alternative Specimen(s) Plasma from fluoride/oxalate (gray-top) tube in a plastic screw-cap vial Serum (separated from cells immediately) in a plastic screw-cap vial Spun SST Plasma from lithium heparin (green-top) tube in a plastic screw-cap vial Plasma from sodium heparin (green-top) tube in a plastic screw-cap vial Minimum Volume 0.5 mL for each specimen Collection Instructions Immediately after a fasting specimen is obtained have patient ingest a 75 g load of glucose. Draw subsequent specimens per physician's order. If not specified by the physician draw specimens 1 2 and 3 hours later. Label each with the specific draw time. Note: Serum and plasma submissions must be separated from cells
Container Temp
Room Temperature (1)
Container Volume
.500
Test Info
Glucose Tolerance Test 4 Specimens - For appropriate interpretation of this test the patient must fast overnight and ingest a 75 g load of glucose immediately after a fasting specimen is obtained. (for children the glucose load is 1.75 g/kg of body weight up to 75). The diagnosis of diabetes is made if glucose exceeds 200 mg/dL in the 2 hour specimen and in any preceding specimen.
Shipping Instructions
Transport Container Fluoride/oxalate (gray-top) tubes Transport Temperature Room temperature Specimen Stability Serum Room temperature: 4 days Refrigerated: 7 days Frozen: 28 days Whole blood (gray-top) tube Room temperature: 24 hours Refrigerated: 72 hours Frozen: Unacceptable Sodium fluoride plasma Room temperature: 7 days Refrigerated: 7 days Frozen: 28 days Heparinized plasma Room temperature: 48 hours Refrigerated: 7 days Frozen: 28 days Reject Criteria Unspun serum or plasma separator tube (SST or PST) Red-top or green-top tube (serum or heparinized plasma not separated from cells) Anticoagulants other than lithium heparin sodium heparin or fluoride/oxalate