A member asked:

Will cephalexin 500mg 4x for 7 days show up as a false positive on a drug test 2 weeks after stopping the meds? son goes to mil boot camp july 7.

A doctor has provided 1 answer
Dr. Susumu Inoue answered

Specializes in Pediatric Hematology and Oncology

No: It is not a false positive due to the antibiotics. You need to sit down with your son and talk.

Answered 6/3/2018

5.1k views

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