SANE Clinical Requirements
http://www.nccasa.org/SANESART/SANE/Certification/ClinicalRequirements.html
Toxicology Screening Protocol. A Toxicology Screening is only necessary when there is sufficient cause to believe. that a drug was used to facilitate a ...
http://www.nccasa.org/SANESART/SANE/SANEProgramDevelopment/Protocols/MariaParhamHealthcare.pdf
Would have definitely done the screening; CGM would have most definitely qualified. Dittos on #6: 6. Victim reports brief periods of memory loss.
She arrived at the hospital, hysterically shrieking she'd been raped. And the fact that she'd been first sent to a detox holding tank, and then uttered the "r" word, common-sense (seems to me) would have definitely demanded she be administered a Tox Screening.
So, as i said, if the SANE nurse thought she had been drugged or was under the influence of drugs, she should have suggested a tox screen. If she did, Mangum declined it. If she didn't, then whatever she was on before and during the lax party had worn off sufficiently by the time of the exam.