Forms Use the full page Analysis Request Form for ordering Toxicology Surveys and Therapeutic Drug Monitoring. Use the half page request form or the chain of custody form for ordering Urine Drugs of Abuse testing. For supplies such as forms, containers, bags, etc., contact the lab. For STAT or routine pick-ups, please call the lab (215) 322-9210.   Group Tests Panels- Small groups of drugs pharmacologically  related, reported qualitatively. Surveys- Drug and toxic substances screens. Profiles- Groups covered with quantitative  results. Concentration units used Concentration Unit Abbreviation Equivalent Units   grams/Liter g/L mg/mL or parts per thousand   milligram/Liter mg/L mcg/mL or parts per million   microgram/Liter mcg/L ng/mL or parts per billion   gram/100 mL g/dL Percent wt/vol   nanogram/mL ng/mL Microgram/L           Report Terminology Not Detected- The substance sought quantitatively did not register, being not different statistically than an appropriate blank. Not determined-  Could not test for due to technical problem. Usual therapeutic range- Inclusive range for the substance/drug being determined based on two or more references and/or laboratory experience. Detection Limit- The lowest concentration in a given determination which can be reliably and reproducibly reported.  Panels-Cover small groups of substances related pharmacologically. For panels, qualitative findings are reported. Surveys- Qualitative screens which are more extensive than panels. Some surveys contain quantitative information. Profiles- Cover a group of substances all of which are quantitatively determined. Comprehensive Toxicologies- Extensive searches for specific substances and drug classes. Parent drug- The term referring to a substance in its prescribed, unmetabolized form. Metabolite- A biotransformation product of the parent drug. Thus once a medication is administered, a patient may have both parent and metabolite concentrations of clinical significance. Peak Concentration- In therapeutic drug monitoring where a steady state serum concentration is not obtained, a "peak" refers to the highest concentration of a substance that occurs following administration of dosage, like the peak of a wave. The time after administration for reaching a peak concentration is different for different medications. Trough Concentration- Like the trough of a wave, this is the lowest concentration of a therapeutic drug, generally assumed to be such immediately before administration of the next dosage of a non-steady state medication. Drug Class- Certain drugs that are chemically similar may be grouped together and tested for as a class. For example, benzodiazepines refers to a general class of drugs, which includes Librium (chlordiazepoxide), Valium (diazepam), and others. AB-C can test for either a class or a specific agent within a class. Toxic Concentration- That concentration, usually 3 to 5 times the highest value of the therapeutic range of a substance, which produces life threatening effects.