Assertion: testosterone's level | /r/CapableOf | vary to day
Facets:
value: on different days
type: TEMPORAL
value: depending on many factors
type: OTHER
Source sentences:
text: Levels can also vary day to day depending on many factors, which is why doctors usually require two early-morning testosterone levels (usually 8–10 am) on different days to be low before diagnosing hypogonadism in men.