Neuropathic group (n=46) | Non-neuropathic group (n=46) | Recommended normal range or maximum | |
Duration of exposure (y) | 21.7 (8–47) | 23.1 (1–51) | |
Blood lead (μg/dl) | 63.93 (18.27) (40–144) | 49.25 (12.84) (26–90.7) | 40 |
Urinary lead (μg/dl) | 9.0 ±3.0) (2—17) | 6.0 ( 2.0) (1–12) | 5.0 |
Urinary coproporphyrins (μg/g creatinine) | 66.71 (38.41) (16.5–208) | 62.14 (31.09) (15–176) | 20–80 |
Urine aminolaevulinic acid (mg/g creatinine) | 1.54 (0.39) (0.73–2.2) | 1.61 (0.51) (0.14–2.83) | 0.5–2.5 |