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. Author manuscript; available in PMC: 2024 Mar 13.
Published in final edited form as: J Anal Toxicol. 2023 Sep 15;47(7):597–605. doi: 10.1093/jat/bkad056

Table II.

Summary Statistics of Pre-PhMA (ng/ml) in 369 Urine Samples Classified by 2CyEMA (≥7.32ng/mL) Determined Smoking Status

Sample type N Geometric mean Upper range Detection frequency (%)
Non-smoking 40 NRa 2.23 5.0
Smoking 329 8.95 378 89.7
a

Not reported: the proportion of results below the limit of detection was too high to provide a valid result.