(h)  Testing for licit and illicit drug use. The physician shall ensure that test results are not used as the sole criterion to force a patient out of treatment, but are used as a guide to change treatment approaches. The program shall ensure that when test results are used, presumptive laboratory results are distinguished from results that are definitive.(1)  Drug abuse tests. Analysis of such tests shall be performed in a laboratory approved under the Clinical Laboratory Improvement Amendments (CLIA) and all applicable Texas state standards.(A)  The program shall ensure that an initial drug test or analysis is performed for each new patient, including permanent transfer patients, before the initial or maintenance dose is administered, and at least monthly random tests or analyses are performed on each patient in comprehensive maintenance treatment for the initial year of treatment and eight random drug abuse tests yearly thereafter. When a sample is collected from each patient for such test or analysis, it must be done in a manner that minimizes opportunity for falsification. see full law