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Test Code 9619 Mercury for Occupational Monitoring, Urine

Additional Codes

Mayo Test ID

Reporting Name

Mercury Occupational Monitor, U

Useful For

Screening potentially exposed workers for mercury toxicity in settings where a 24-hour collection is problematic

Profile Information

Test ID Reporting Name Available Separately Always Performed
HGCO Hg Conc No Yes
CDCR Creatinine Conc No Yes

Performing Laboratory

Mayo Medical Laboratories in Rochester

Specimen Type


Specimen Required

Collection Container/Tube: Clean, plastic urine collection container

Submission Container/Tube: Plastic, 5-mL tube (T465) or a clean, plastic aliquot container with no metal cap or glued insert

Specimen Volume: 5 mL

Collection Instructions:

1. Patient should abstain from seafood (especially shellfish) for 2 days prior to urine collection.

2. Collect a random urine specimen.

3. Shake specimen gently.

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

Specimen Minimum Volume

2 mL

Specimen Stability Information

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

Reference Values


<35 mcg/g

Day(s) and Time(s) Performed

Monday through Friday; 7 p.m., Saturday; 2 p.m.

Test Classification

This test was developed and its performance characteristics determined by Laboratory Medicine and Pathology, Mayo Clinic. This test has not been cleared or approved by the U.S. Food and Drug Administration.

CPT Code Information

83825 Mercury Concentration

82570 Creatinine Concentration

LOINC Code Information

Test ID Test Order Name Order LOINC Value
HGOM Mercury Occupational Monitor, U In Process


Result ID Test Result Name Result LOINC Value
CDCR Creatinine Conc 2161-8
21667 Hg Conc 5689-5
21679 Hg/Creatinine Ratio 13465-0

Method Name

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

CDCR: Enzymatic Colorimetric Assay

Barnes-Jewish Hospital Additional Information:
For BJH Laboratory Use Only

Laboratory Processing Instructions:
BJH Chemistry will forward to the performing laboratory. Do not reject specimen if not received on ice.