Result Test Name
QUEST COMMENTS
Laboratory
QUEST LAB
Result Test Code
1230910064
Laboratory Test Name
Lactose Tolerance Test 5 Specimens (50g) (Quest)
Reportable Test Name
-
Result LOINC
8251-1
Collection Container
K OXALATE AND NA FLUORIDE - GREY TOP
Units
-
Collection Requirements
Patient Preparation Important note: If patient is to be drawn at Quest Diagnostics PSC the test must be scheduled at a PSC capable of administering the dose. Please call 1-866-MyQuest (866-697-8378) to schedule. Fasting required. Fasting is defined as no consumption of food or beverage other than water for at least 8 hours before testing. Collection Instructions Immediately after a fasting specimen is obtained have patient ingest a 50 g dose of lactose (supplied by laboratory). Draw subsequent specimens 1/2 1 2 and 3 hours later. Label each with the specific draw time. Note: Children should receive 1.75 g lactose per kg ideal body weight up to 50 g. Preferred Specimen(s) Five - 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
Container Temp
Room Temperature (1)
Container Volume
1.000
Test Info
-
Shipping Instructions
Transport Container Fluoride/oxalate (gray-top) tubes Transport Temperature Room temperature Specimen Stability 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 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 Note: Serum and plasma submissions must be separated from cells. 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