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Test Code HMHA Heavy Metals, Hair

Reporting Name

Heavy Metals, Hair

Useful For

Detection of nonacute arsenic, mercury, and lead exposure in hair specimens

Profile Information

Test ID Reporting Name Available Separately Always Performed
ASHA Arsenic, Hair Yes Yes
PBHA Lead, Hair Yes Yes
HGHAR Mercury, Hair Yes Yes

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Specimen Type


Specimen Required

Supplies: Hair and Nails Collection Kit (T565)

Specimen Volume: 0.2 g

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

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
Hair Ambient (preferred)

Reference Values


0-15 years: not established

≥16 years: 0.0-0.9 mcg/g of hair



0.0-3.9 mcg/g of hair

Reference values apply to all ages.



0-15 years: not established

≥16 years: 0.0-0.9 mcg/g of hair

Day(s) and Time(s) Performed

Tuesday; 3 p.m.

Test Classification

See Individual Test IDs

CPT Code Information




LOINC Code Information

Test ID Test Order Name Order LOINC Value
HMHA Heavy Metals, Hair 34667-6


Result ID Test Result Name Result LOINC Value
31896 Arsenic, Hair 5584-8
31900 Mercury, Hair 5686-1
31898 Lead, Hair 5673-9
PBHSC Specimen Source 31208-2
HGHSC Specimen Source 31208-2
ASHSC Specimen Source 31208-2

Method Name

Inductively Coupled Plasma-Mass Spectrometry (ICP-MS)