Blood, urine, and sweat (BUS) study: monitoring and elimination of bioaccumulated toxic elements.
Level 4 - case-series / case-control
Small observational cross-sectional study comparing biofluid concentrations across 20 individuals
PubMed 21057782 · doi:10.1007/s00244-010-9611-5
What was done
Blood, urine, and sweat samples were collected from 20 participants (10 healthy individuals and 10 individuals with various health conditions) and analyzed for approximately 120 compounds, including toxic metals and metalloids.
What was found
The abstract provides no numerical concentrations, element-specific excretion rates, or statistical test results. It qualitatively reports that toxic elements were present across all three biofluids, with many elements appearing to be preferentially excreted in sweat, and some elements detected in sweat despite being undetectable in serum.
Why it matters
Suggests that blood and urine testing alone may underestimate total body burden of toxic elements, and that sweat may represent an active pathway for monitoring and eliminating bioaccumulated toxicants.
Limits
Small sample size (n=20) divided into heterogeneous health subgroups without specified clinical characteristics. The abstract reports zero quantitative values or confidence intervals, lacks details on sweat collection protocols or contamination controls, and does not establish whether induced sweating reduces tissue toxicity or improves clinical outcomes.
Cited by
- partial Research by Stephen Genuis showed that cadmium concentration in human sweat can be over 1,000 times higher than in blood.