LOINC display name : Cortisol PM trough specimen [Mass/Vol];
LOINC long common name : Cortisol [Mass/volume] in Serum or Plasma --PM trough specimen;
LOINC short name : Cortis PM SerPl-mCnc;
LOINC description : Identifies an evening specimen when cortisol is at its lowest point in a circadian
cycle -often considered to be midnight. Some laboratories will call this 12AM (midnight)
specimen, but specimens in the range of 11PM to 1AM are acceptable. The trough time
may have to be adjusted for patients on different work shifts because their circadian
rhythms can shift with their sleeping time.;
Has challenge