Identification of Synthetic Urine by Analysis of Stable Carbon and Nitrogen Isotope Ratios and Comparison to Established GC‐MS/MS and LC‐MS/MS Analysis
Frank Hülsemann, Laura Franke, Dirk K. Wissenbach, Gregor Fußhöller, Mario Thevis · 2026
Read Identification of Synthetic Urine by Analysis of Stable Carbon and Nitrogen Isotope Ratios and Comparison to Established GC‐MS/MS and LC‐MS/MS Analysis by Frank Hülsemann, Laura Franke, Dirk K. Wissenbach, Gregor Fußhöller, Mario Thevis (2026) in the Tower of Babel, a free online library of public-domain works preserved in clean, searchable text. No sign-up. The full text is served as a plain-text file at a predictable URL, where text is present: https://antarctic-labs.com/tower-of-babel/PMC13432729.txt.
Description
Frank Hülsemann and co-authors compared lab routes in 2026 for spotting fake urine used to cheat doping and forensic tests. Fake products mimic real urine, and cheats may blend the two. The team ran three routes blind: a steroid scan, an atom-weight method for carbon and nitrogen, and a marker-based liquid scan.
All routes caught pure fake samples. The steroid scan flagged fakes by their lack of body-made steroids. The atom-weight route shone on blends: fake urine's atom marks sat far outside the human band, and half-and-half blends still read as off. The marker scan caught blends rich in fake share. The authors pitch atom weights as a strong partner when steroid reads leave doubt.
Catalog record
| CREATOR | Frank Hülsemann, Laura Franke, Dirk K. Wissenbach, Gregor Fußhöller, Mario Thevis |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 27036 |
| LICENSE | https://creativecommons.org/licenses/by/4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |