Arsenic, Nails
Use
Detection of nonacute arsenic exposure in nail specimens. Arsenic accumulates in keratin-rich tissues such as nails, where levels can indicate exposure weeks to months prior. Nails grow slowly (approximately 0.1 inch/month), so distal clippings reflect exposure from about six months ago. Nail arsenic above 1.0 mcg/g dry weight may indicate excessive exposure; normal exposure results in trace amounts. ([mayocliniclabs.com](https://www.mayocliniclabs.com/test-catalog/Overview/89848?utm_source=openai))
Special Instructions
Use Hair and Nails Collection Kit (T565); indicate source of nails (fingernails or toenails). Collect clippings from all 10 fingernails or toenails. Follow instructions in Collecting Hair and Nails for Metals Testing; All specimens will be evaluated at Mayo Clinic Laboratories for test suitability. ([mayocliniclabs.com](https://www.mayocliniclabs.com/test-catalog/Overview/89848?utm_source=openai))
Limitations
No significant cautionary statements specified. (It is noted that this is an unpublished Mayo method and not FDA-approved.) ([mayocliniclabs.com](https://www.mayocliniclabs.com/test-catalog/Overview/89848?utm_source=openai))
Methodology
Mass Spectrometry (ICP-MS/MS)
Biomarkers
LOINC Codes
- 8157-0
- 8157-0
- 31208-2
Result Turnaround Time
2-14 days
Related Documents
For more information, please review the documents below
Specimen
Nail
Volume
0.2 g
Minimum Volume
0.05 g
Collection Instructions
Clippings should be taken from all 10 fingernails or toenails, per kit instructions
Causes for Rejection
All specimens will be evaluated at Mayo Clinic Laboratories for test suitability