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LACTOSE TOLERANCE TEST (LTT)

Message
This test MUST BE scheduled at least one day in advance. The patient's height and weight information must be given to the laboratory at this time. Overnight fast is required.


Test Code
82756


Alias/See Also
LTT


CPT Codes
82951, 82952 (x2)

Includes
Includes: fasting lactose; 15 minute lactose; 30 minute lactose; 60 minute lactose; 90 minute lactose


Preferred Specimen
Plasma


Instructions
Do not collect the fasting level until the lactose solution is prepared and at bedside. The patient is given the lactose solution after the fasting specimen is drawn; it must be ingested within 10 minutes of this collection. Lactose levels are then collected at 15-, 30-, 60-, and 90- minute intervals following lactose ingestion.


Transport Container
Preferred: Light green top; Acceptable: Plain green top, Gold top, Grey top, Plain red top


Transport Temperature
Refrigerated




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.