Assertion: marijuana's thc | /r/HasProperty | detected at levels of 0.5 – 3.2 ng/ml
Facets:
value: in whole blood
type: LOCATION
value: in one study of chronic users
type: OTHER
value: for 24 to 48 hours
type: TEMPORAL
Source sentences:
text: In one study of chronic users, residual THC was detected for 24 to 48 hours or longer at levels of 0.5 – 3.2 ng/ml in whole blood (1.0 – 6.4 ng/ml in serum)