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Table 2 Descriptive statistics of meconium and serum tobacco smoke metabolite concentrations

From: A prospective cohort study of biomarkers of prenatal tobacco smoke exposure: the correlation between serum and meconium and their association with infant birth weight

Metabolite N % Detected Minimum 5th 25th Median 75th 95th Maximum
Meconium NIC 331 80.1 < LOD < LOD 1.06 2.02 4.14 48.2 301
Meconium COT 339 69.6 < LOD < LOD < LOD 0.12 0.40 33.5 313
Meconium HCOT 335 56.4 < LOD < LOD < LOD 0.10 0.52 51.2 324
Serum COT 338 61.2 < LOD < LOD < LOD 0.02 0.21 62.8 356
  1. *-Meconium concentrations are ng/g and serum concentrations are ng/mL