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Module Progress: Forensic Toxicology and Poison Analysis

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Forensic Toxicology and Poison Analysis

question 1 of 6 course: Biomedical Science(Degree)

Q: In a suspected drug-facilitated sexual assault (DFSA) case, why is the timing of urine sample collection particularly critical when testing for GHB (gamma-hydroxybutyrate)?

Delayed collection makes the sample too concentrated for analysis.
GHB concentrations increase over time in stored urine.
GHB is rapidly eliminated and may be undetectable if collection is delayed more than 12 hours.
Urine is the only suitable specimen for GHB analysis.

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True. The 0.5 McFarland turbidity standard is used to standardize bacterial suspensions to approximately 1.5 × 10^8 CFU/ml, ensuring consistent inoculum density for reliable susceptibility testing.

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Did You Know?

True. The 0.5 McFarland turbidity standard is used to standardize bacterial suspensions to approximately 1.5 × 10^8 CFU/ml, ensuring consistent inoculum density for reliable susceptibility testing.

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