Date Rape

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Date Rape

Date Rape

I regularly come across date rape allegations. Some turn out that the Defendant did indeed use a drug to facilitate unwanted / unwelcome sex. Frequently the results show the opposite; the complainant (usually female) is making a false accusation.

Expert Witness Pharmacology

Background

I regularly come across date rape (drug facilitated sexual assault - DFSA) allegations.

Some turn out that the Defendant did indeed use a drug to facilitate sex (unwanted / unwelcome to the other person).

Frequently the results show the opposite; the complainant (usually female) is making a false accusation.

Example 1

An unusual case of alleged rape encountered was one in which the (Asian) defendant was accused of using chloroform as a ‘medicine’ to reduce pain and discomfort during intercourse and also to render his sexually naïve wife “senseless” in order to have non-consensual sex with her.

An examination of the medical records showed that there was no redness noted at any time around the nose or mouth.

However, to my initial surprise, I learned from doctors in India that chloroform is used sometimes by some [rural] communities as a sedative or hypnotic, and even as treatment for bipolar disorder – which in fact applied to the complainant.

Example 2

An agitated female, under sedation in a hospital Accident & Emergency department, stated to police that she had been raped by a named individual, citing a plausible scenario complete with suspected drugs.

However, it was later proved by me that the plasma half lives of the agents did not tally with the stated timings. The time-frames for critical analyses were not understood by the complainant.

Following an intensive investigation, it transpired that she was simply alcohol intoxicated, and also her high alcohol level did not combine well with the psychiatric medication for her underlying mental condition.

Example 3

Defendant in a rape case was found to have a trace of gammabutyrolactone / GBL in a drinking vessel at a concentration found by analysis to be more than 230 times too high to have originated from any commercially available drinks, and consistent with dosing for DFSA in his garage workshop.

GBL is a precursor of gamma-hydroxybutyric acid / GHB a date rape drug.

However, it was possible that GBL had been used in the Defendant’s garage, having been obtained from the internet as an alloy cleaner.

Therefore, it is conceivable that the drinking vessel could have contained an effective dose of neat GBL prior to the addition of Coca Cola, either deliberately or by accident.

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