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Test Code HGUO Mercury Occupational Exposure, Random, Urine


Specimen Required


Patient Preparation: High concentrations of gadolinium and iodine are known to interfere with most metals tests. If either gadolinium- or iodine-containing contrast media has been administered, a specimen should not be collected for 96 hours.

Supplies: Urine Tubes, 10 mL (T068)

Collection Container/Tube: Clean, plastic urine container with no metal cap or glued insert

Submission Container/Tube: Plastic, 10-mL urine tube (T068) or clean, plastic aliquot container with no metal cap or glued insert

Specimen Volume: 3 mL

Collection Instructions:

1. Collect a random urine specimen.

2. See Trace Metals Analysis Specimen Collection and Transport in Special Instructions for complete instructions.


Secondary ID

48555

Useful For

Detecting mercury toxicity due to occupational exposure

Profile Information

Test ID Reporting Name Available Separately Always Performed
HGOE Mercury Occupational Exposure No Yes
CDCR Creatinine Conc No Yes

Method Name

HGOE: Inductively Coupled Plasma-Mass Spectrometry (ICP-MS)

CDCR: Enzymatic Colorimetric Assay

Reporting Name

Mercury Occupat Exposure, Random, U

Specimen Type

Urine

Specimen Minimum Volume

1.5 mL

Specimen Stability Information

Specimen Type Temperature Time Special Container
Urine Refrigerated (preferred) 7 days
  Frozen  7 days

Reject Due To

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

Clinical Information

The correlation between the levels of mercury (Hg) excretion in the urine and the clinical symptoms is considered poor. However, urinary Hg is the most reliable way to assess exposure to inorganic Hg.

 

For additional information, see HG / Mercury, Blood.

Reference Values

Biological Exposure Index (BEI): <35 mcg/g creatinine prior to shift

Interpretation

Daily urine excretion of mercury greater than 50 mcg/day indicates significant exposure (per World Health Organization standard).

Clinical Reference

1. Lee R, Middleton D, Caldwell K, et al: A review of events that expose children to elemental mercury in the United States. Environ Health Perspect 2009 Jun;117(6):871-878

2. Bjorkman L, Lundekvam BF, Laegreid T, et al: Mercury in human brain, blood, muscle and toenails in relation to exposure: an autopsy study. Environ Health 2007 Oct 11;6:30

Day(s) and Time(s) Performed

Monday through Saturday; 7 p.m.

Analytic Time

1 day

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Test Classification

See Individual Test IDs

CPT Code Information

83825

82570

LOINC Code Information

Test ID Test Order Name Order LOINC Value
HGUO Mercury Occupat Exposure, Random, U 13465-0

 

Result ID Test Result Name Result LOINC Value
CDCR Creatinine Conc 2161-8
48556 Mercury Occupational Exposure 13465-0