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HelpTest Code LTBT Lactose Tolerance Breath Test
Additional Codes
Epic EAP: LAB3061
Epic Description: LACTOSE TOLERANCE BREATH TEST
Synonym
Breath Test
Hydrogen Breath Test
Collection Limitations
Collect during daytime hours after overnight fast.
Specimen Type
Breath
Specimen Required
| Collection Container | Preferred Volume | Minimum Volume | |
|---|---|---|---|
| Preferred |
Breath airbag |
Full Bag | Half Bag |
Instructions for Collection and Transport
Collect in airbag. Send to lab ASAP. Please note collection time on bag. After collecting fasting specimen, the patient is given 25 gms of Lactose orally. The remaining specimens are collected at timed intervals 1hr, 2hrs, 3hrs, and 4hrs post lactose administration. Ensure that the air collection bag is completely expanded. This test is not available for collection at remote locations.
Performing Lab
Special Chemistry Lab
Assay Frequency
Monday – Friday
Routine Turnaround Time
72 hours
CSR Storage Requirements
Deliver to laboratory. Store at room temperature if holding overnight.
CPT Code Information
91065
Patient Preparation
1. The patient must be fasting for 12 hours (only water to drink) prior to the test and must remain fasting during collection.
2. Patients are not permitted to smoke, sleep, nor exercise vigorously for at least 1 hour before or any time during the test.
3. High fiber cereals and slow digesting foods such as nuts, seeds, beans, dairy products ( except eggs) and some other fruits and vegetables are not to be consumed 24 hours before the fasting.
4. Note if patient is undergoing course of antibiotic therapy.
This test will take approximately 4 hours. The patient must remain in the waiting area for the duration of the test.