Winter Weather Closings

Please note, all WakeMed Physician Practices, urgent cares, and outpatient services - lab, imaging, rehab and Healthworks - will be closed on Wednesday, January 17 and will likely have a delayed opening on Thursday, January 18. Learn more.

Our hospitals and emergency departments never close.

Cannabinoid Crossreactivity Table


 Compound  Conc.(ug/mL)  Effect
l-11-Nor-s 9-THC-9-COOHb (cutoff)  0.05  Positive
Cannabinol  0.15  Positive
l-11-Nor-s 8-THC-9-COOH  0.07  Positive
8-B-11-Dihydroxy-s 9-THC  0.08  Positive
11-Hydroxy-s 9-THC  0.13  Positive
8-B-Hydroxy-s 9-THC  0.14  Positive
s 9-THC  0.05  Positive 
Acetaminophen  1000  Negative 
Acetylsalicylic Acid  1000  Negative
Albuterol  1000  Negative
Amobarbital  1000  Negative
d-Amphetamine  1000  Negative
Benzoylecgonine  1000  Negative 
Caffeine  100  Negative
Cannabidiol  10  Negative 
Cocaine  200  Negative 
Codeine  1000   Negative
Dextromethorphan  1000   Negative 
Ibuprofen  1000   Negative 
Meperidine  1000   Negative 
Methadone  1000   Negative
d-Methamphetamine  1000   Negative 
Morphine  200  Negative 
d-11-Nor-s 9-THC-9-COOH  c  0.1 Negative 
Oxazepam  500  Negative 
Phencyclidine  1000  Negative 
Phenobarbital  1000  Negative 
Propoxyphene  1000  Negative 
Secobarbital  1000  Negative
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a)   Data shown was collected using SYNCHRON CX Systems. Equivalency between SYNCHRON LX Systems has been established by correlation analysis to SYNCHRON CX Systems.
b)   Natural urine metabolite of s 9-THC.
c)   Synthetic isomer of s 9-THC metabolite