Conditions for Calculating Expiry and Warning Dates

An unknown or duplicate sample scheme's Expires On and Warning On dates or an unknown or duplicate sample scheme analyte's Expires On and Warning On dates are calculated using the sample scheme's Holding Time and scheme version's Warning Time or the sample scheme analyte's Holding Time and scheme version's Warning Time, respectively, and:

• If a sample scheme has a Precursor Scheme Code, then the precursor sample scheme's Completed Date
• If a sample scheme does not have a Precursor Scheme Code, then the sample's Sampled Date and Received Date.

This is performed by the holding time engine. Refer to Using Sample Expiry.

Note that Expires On and Warning On dates are NOT determined for replicate, blank, standard or spike sample schemes and sample scheme analytes, even where their sample schemes contain holding and/or warning times, respectively.