International evaluation of urinalysis shows that it is not in itself instrumental in reducing harm related to illicit drug use. Urinalysis provides information only about a patient's recent drug use and not about quantity, frequency or route of drug use and is a supplement to patient self-report. With these limitations in mind, urinalysis results are integrated into the clinical assessment.
Research has consistently indicated that where patients do not have to be concerned that they will be punished for disclosure of illicit drug use the reliability of self-reported drug use increases.
However urinalysis may be indicated or useful in the following situations:
Essential factors to promote reliability include:
Note: If a patient does not complete a requested urinalysis further investigation is required.
*See Appendix 6 Approximate Detection Time for Selected Drugs in Urine page 105 of " New Zealand Practice Guidelines for Opioid Substitution Treatment 2014"
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