The Clinician–Laboratory Connection, the Vital Link: Comments Regarding the NCCLS Proposed Standard for Clinical Laboratory Requisition Forms

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Close communications between the clinician and the laboratory are of particular importance in the analysis of a specimen for therapeutic drug monitoring, including compliance verification, and for overdose toxicology- Specific information may be necessary to determine such factors as the biologic fluid of choice; the method of analysis to be selected; the drug concentrations in that laboratory which constitute limit points for subtherapeutic, therapeutic, and toxic levels for the age group and size of the patient; and decisions for modifying therapy. In addition, each requisition slip should serve as a learning exercise both for the ordering clinician and for the laboratorian. To these ends, the National Committee for Clinical Laboratory Standards has proposed a standard for requisition forms for therapeutic drug monitoring and drug overdose. This standard, PST/DM-1, will pro-vide data points for each laboratory to develop its own requisition slips to maximize clinical input.

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