If you believe you have been dosed with GHB, it is still detectable in urine for up to 12 hours and if that window is missed, it is detectable in hair, which does not breakdown any drugs deposited in it.
Tests show that the best time to take a hair sample to test for GHB is 1 month after being drugged.
Both Joanna Cassidy and Brooke Nevin co-starred in Call Me Fitz.