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Test Code BR TOL Breath Tolerance Carbohydrate Malabsorption

Important Note

This test must be scheduled with the Chemistry Laboratory at 206-987-3860. Outside orders should be faxed to 206-985-3124.

Clinical System Name

Breath Tolerance Carbohydrate Malabsorption

Synonyms

Breath hydrogen and methane tolerance

Fructose

Lactose

Sucrose

Description

This test must be scheduled in advance with the Chemistry Lab. (206)987- 3860.  Patients must be off of antibiotics for two weeks and should fast for 10 h prior to test.  A 6 h fast is acceptable for infants. An elevated fasting (baseline) breath sample can be seen with colonic fermentation or bacterial overgrowth.

 

The ordering provider should specify challenge (fructose, lactose, sucrose).

Sample Requirements

Specimen: Breath

Container(s):

Preferred Vol:

Minimum Vol:

 

Note: Diabetic patients will have a fasting blood glucose collected and run before the procedure is started.

Availability

STAT Performed TAT
N M, W, Th, day shift 1 d

 

Test must be scheduled with chemistry lab (206) 987-3860.

Performing Laboratory

Seattle Children's Laboratory    

 

Department

Department:  Chemistry

Location: Chem East

Phone Number: (206) 987-3860

 

Reference Range

 

  Rise in expired hydrogen over baseline Rise in methane Rise in hydrogen + methane
Carbohydrate Intolerance > 20 ppm > 12 ppm > 15 ppm

 

Methodology

Method: Gas Chromatography

Analytical Volume:

Limitations:

CPT Codes

91065