A Case of Fatal Benzylpiperazine (BZP) and Trifluoromethylphenylpiperazine (TFMPP) Toxicity
Bibliographic record
Abstract
Toxicology analysis carried out on several postmortem samples relating to the sudden death of a 21-year-old male, confirmed the presence of high concentrations of N-benzylpiperazine (BZP) and 3-trifluoromethylphenylpiperazine (TFMPP). Methamphetamine (MA), 3,4-methylenedioxy- methylamphetamine (MDMA, ‘Ecstasy’) and trace amounts of 3,4-methylenedioxyamphetamine (MDA) and amphetamine were also detected. Items examined included femoral blood, vitreous, urine, liver, bile and gastric contents, which were all obtained during a postmortem examination that was carried out within 24 hours of the discovery of the body. A number of brightly coloured tablets (recovered from the scene) were also analysed and were found to contain primarily BZP and TFMPP. One type of tablet additionally contained MA. Postmortem blood and other specimens analysed by GC/MS with selected ion monitoring using TFMPP-d4 as the internal standard, gave the following results: BZP: femoral blood 21.4, vitreous 25.2, liver 120, bile, 200, gastric 80; TFMPP femoral blood 3.3, vitreous 1.7, urine 90, liver 84, bile 61 and gastric 37 (all results mg/L except liver mg/kg and gastric mg/78.1 g). Femoral blood also contained 0.22 mg/L of MA and 0.26 mg/L MDMA.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.005 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.001 | 0.005 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.001 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".