Chartered Manager for CEng and IEng members. Chartered Manager is the most prestigious status that can be achieved in the managerial profession. Awarded by the Chartered Management Institute (CMI) [new window], it is recognised throughout the public and private sectors and across all management disciplines.
DPH is an abbreviation for the chemical Diphenhydramine (dye-fen-hye'-dra-meen). It is the active ingredient in many over the counter sleep aids including Unisom, Nytol, Tylenol PM (combined with acetaminophen) and in many generic store brand remedies.
LOD and cutoff. The LOD of the DPH assay was determined as the lowest concentration that can be accurately measured using the described parameters for the assay. Three drug-free authentic urine specimens were fortified with varying concentrations of DPH down to 1 ng/mL and then analyzed in duplicate.