https://www.selleckchem.com/products/rsl3.html Clinical drug testing is the process of analyzing plasma (serum) or urine to detect the presence or absence of a drug or its metabolites. As the metabolization rate of drugs differs, the window of detection for certain drugs or metabolites varies. Clinical drug testing plays an important role in the management of poisonings because the self-report of the drugs that have been taken is often unreliable. The same is true in the treatment of addiction disorders because clinical examination, patient self-reporting, and hetero-anamnesis will underreport the actual incidence of substance use. Drug testing can be indicated in cases of suspected overdose or when monitoring abstinence in patients treated for addiction or in pain management clinics. No universal standard exists today in clinical drug testing for addiction identification, diagnosis, treatment, medication monitoring, or recovery. Guidelines exist for laboratory analyses for poisoned patients. In poisoning cases, the indications for laboratory assays are to confirm the suspicion of poisoning when this is in doubt and to influence patient management. Some examples of indications are to establish or eliminate the need for further investigations or administration of antidotes, hemodialysis, or other invasive extracorporeal epuration methods. Clinical drug testing may also be needed to determine if the cessation of treatment is indicated or to plan the re-institution of chronic therapy. In the intensive care unit, clinical drug testing is used to aid in the diagnosis of brain death and to determine the suitability of potential organ donors. The use of laboratory investigations out-of-hours should be restricted to those instances when an urgent result is needed to guide immediate patient management. It may also be appropriate to obtain samples and store them for later analysis.Thalassemia and sickle cell disease are some of the most common single-gene inherited hemoglobin