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Test Code MER-HAIR,NAILS Mercury, Hair

Additional Codes

Mayo Test ID
HGHAR

Reporting Name

Mercury, Hair

Useful For

Detecting mercury exposure in hair specimens

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Specimen Type

Hair


Specimen Required


Supplies: Hair and Nails Collection Kit (T565)

Specimen Volume: 0.2 g

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

Additional Information: If known, indicate source of hair (axillary, head, or pubic).


Specimen Minimum Volume

0.05 g

Specimen Stability Information

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

Reference Values

0-15 years: Not established

≥16 years: <1.0 mcg/g of hair

Day(s) Performed

Tuesday

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

83825

LOINC Code Information

Test ID Test Order Name Order LOINC Value
HGHAR Mercury, Hair 5686-1

 

Result ID Test Result Name Result LOINC Value
31900 Mercury, Hair 5686-1
HGHSC Specimen Source 31208-2

Clinical Information

Once absorbed and circulating, mercury becomes bound to numerous proteins, including keratin. The concentration of mercury in hair correlates with the severity of clinical symptoms. If the hair can be segregated by length, such an exercise may be useful in identifying the time of exposure. Hair grows at a rate of approximately 0.5 inch/month. Hair keratin synthesized today will protrude through the skin in approximately 1 week. Thus, a hair specimen collected at the skin level represents exposure of 1 week ago, 1 inch distally from the skin represents exposure 2 months ago, etc.

Interpretation

Normally, hair contains less than 1 mcg/g of mercury; any amount more than this indicates that exposure to more than normal amounts of mercury may have occurred.

Report Available

2 to 8 days

Reject Due To

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

Method Name

Inductively Coupled Plasma-Mass Spectrometry (ICP-MS)

Cautions

Cosmetic and hair dyes can be a potential source of heavy metal contamination.