Wyoming Administrative Code
Agency 048 - Health, Department of
Sub-Agency 0010 - Chemical Analysis of Blood Alcohol
Chapter 3 - PROCEDURES FOR ANALYSIS
Section 3-1 - Procedural controls

(i) Subject must be observed for a minimum of fifteen (15) minutes prior to testing to prevent residual mouth alcohol. All foreign material (except dentures) must be removed from the mouth at the start of observation period and subject must not be allowed to smoke, eat, drink or place anything in their mouth. If the subject vomits or regurgitates, the observation period must be restarted after rinsing the mouth with water. A dry burp or belch will not affect the test; therefore, the observation time can continue.

(ii) A blank analysis with a result less than 0.005%.

(iii) Analysis of a suitable reference sample whose result shall agree within the limits of + 5% to - 10% of the expected value.

(iv) Duplicate breath specimens must be analyzed. If the duplicate analyzed specimens do not agree within 0.020% of each other then a third specimen must be analyzed. The lowest value of the pair that agrees within 0.020% of each other shall be reported. Agreement within 0.020% verifies the results and demonstrates that no significant errors, such as residual mouth alcohol, voltage changes, electromagnetic interference, non-alveolar breath, etc. have occurred. If a pair of results agreeing within 0.020% cannot be found among the three results, a blood or urine test should be taken or the breath test started over, discarding all previous results.

(v) Analysis must be run using an approved checklist provided by the state agency.

(i) A blank analysis with a result of less than 0.005%.

(ii) Analysis of one or more suitable reference samples and controls, the results of which must agree within the limits of + 5% or - 10% of the expected value.

(iii) Each subject sample shall be analyzed in duplicate and the lower of the two shall be reported. The results must agree within 5% or within 0.005% if the alcohol concentration is less than 0.100%.