Ethanol breath

Specimen:

Expired air blown directly into instrument.

Method:

Spectrophotometry.

The result is usually provided as a blood level, less commonly as the actual concentration in expired air.

Reference Interval:

Not detected in the absence of ethanol ingestion.

Application:Used as a screening test for ethanol ingestion.
Interpretation:

If a positive result is of possible clinical significance, it is necessary to collect a blood specimen as the blood level estimated from a breath specimen may be inaccurate.

Reference:

Cook JD. Clin Biochem 2003; 36(1): 9-19.