The following substances may interfere with the Alco-Screen™ stick when using samples other than saliva:
Agents that may enhance color development:
- Strong Oxidizers
Agents that may inhibit color development:
- Ascorbic acid
- Tannic Acid
- Mercaptans and tosylates
The above-named substances do not normally appear in sufficient quantity in saliva to interfere with the test. However, care must be taken that they are not introduced into the mouth during the 15 minute period preceding the test.