Sign in →

Test Code PBNA Lead, Nails

Reporting Name

Lead, Nails

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Useful For

Detecting lead exposure using nail specimens

Method Name

Inductively Coupled Plasma-Mass Spectrometry (ICP-MS)


Necessary Information


Indicate source of nails (fingernails or toenails), if known



Specimen Required


Supplies: Hair and Nails Collection Kit (T565)

Specimen Volume: 0.2 g

Collection Instructions:

1. Prepare and transport specimen per the instructions in the kit or see Collecting Hair and Nails for Metals Testing.

2. Clippings should be taken from all 10 fingernails or toenails.


Specimen Type

Nail

Specimen Minimum Volume

0.05 g

Specimen Stability Information

Specimen Type Temperature Time Special Container
Nail Ambient (preferred)
  Frozen 
  Refrigerated 

Reject Due To

All specimens will be evaluated at Mayo Clinic Laboratories for test suitability

Reference Values

<4.0 mcg/g of nails

Reference values apply to all ages.

Interpretation

Normally, the nail lead content is below 4.0 mcg/g. While nail lead content above 10.0 mcg/g may indicate significant lead exposure, nails are also subject to potential external contamination with environmental lead. Ultimately, the nail lead content needs to be interpreted in addition to the overall clinical scenario including symptoms, physical findings, and other diagnostic results when determining further actions.

Day(s) Performed

Tuesday

Report Available

2 to 8 days

Test Classification

This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. It has not been cleared or approved by the US Food and Drug Administration.

CPT Code Information

83655

LOINC Code Information

Test ID Test Order Name Order LOINC Value
PBNA Lead, Nails 8202-4

 

Result ID Test Result Name Result LOINC Value
2506 Lead, Nails 8202-4
PBNSC Specimen Source 31208-2