First conditional or conditional I refers to a pattern used in predictive conditional sentences, i.e. those that concern consequences of a probable future event (see Types of conditional sentence).irst conditional or conditional I refers to a pattern used in predictive conditional sentences, i.e. those that concern consequences of a probable future event (see Types of conditional sentence).
Each federal agency is required to have blind samples (i.e., negative samples, positive samples, 1  adulterated samples, substituted samples) submitted along with the donor specimens. The. blind samples may be purchased by the federal agency and supplied to the collector, or.
That depends on the test. For culture and sensitivity the specimen must be delivered to lab or chilled within a short window otherwise bacterial overgrowth will occur. Lab will advise, procedures will be in place. Re testing for drug metabolites I've no specific knowledge re timing.