Table A4.
Range of the lower limits of detection (LOD) for each of the urine and blood metals that comprise the Umix and Bmix mixtures and speciated urinary As, as reported by NHANES for cohorts between 2009 and 2014. Percent values below LOD are reported as a percentage of the combined cohort.
| Mixture | Component (units) | LOD (range) | % below LOD |
|---|---|---|---|
| Bmix | Blood cadmium (ug/L) | 0.10–0.16 | 46% |
| Blood lead (ug/dL) | 0.07–0.25 | 2% | |
| Blood mercury, total (ug/L) | 0.16–0.28 | 23% | |
| Umix | Urinary cadmium (ug/L) | 0.04–0.06 | 26% |
| Urinary lead (ug/L) | 0.03–0.10 | 4% | |
| Urinary mercury (ug/L) | 0.05–0.13 | 19% | |
| Urinary arsenic, total (ug/L) | 0.26–1.25 | 1% | |
| Speciated urinary As mixture | Urinary arsenous acid (ug/L) | 0.12–1.20 | 58% |
| Urinary arsenic acid (ug/L) | 0.79–1.00 | 98% | |
| Urinary arsenobetaine (ug/L) | 0.40–1.19 | 63% | |
| Urinary arsenocholine (ug/L) | 0.11–0.60 | 94% | |
| Urinary dimethylarsonic acid (ug/L) | 1.70–1.91 | 52% | |
| Urinary monomethylarsonic acid (ug/L) | 0.20–0.90 | 99% |