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Test ID HMSUO Heavy Metals Screen Occupational Exposure, Urine

Useful For

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

Method Name

CDCR: Enzymatic Colorimetric Assay

ARCO, PBCO, CDUOM, HGCO: Inductively Coupled Plasma-Mass Spectrometry (ICP-MS)

Reporting Name

Heavy Metals Scrn Occ Exposure, U

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. Collect a random urine specimen.

2. Shake specimen gently.

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

Additional Information:

1. Patient should not eat seafood for a 48-hour period prior to start of collection.

2. 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.

Specimen Minimum Volume

5 mL

Specimen Stability Information

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

Reference Values


<50 mcg/g



<35 mcg/g



<3.0 mcg/g



<5 mcg/g

Day(s) and Time(s) Performed

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

Performing Laboratory

Mayo Medical Laboratories in Rochester

CPT Code Information





82570 Creatinine

LOINC Code Information

Test ID Test Order Name Order LOINC Value
HMSUO Heavy Metals Scrn Occ Exposure, U In Process


Result ID Test Result Name Result LOINC Value
CDCR Creatinine Conc 2161-8
21670 As Conc 5586-3
860 Cd Conc 5611-9
21667 Hg Conc 5689-5
21673 Pb Conc 5676-2
21674 Pb/Creatinine Ratio 13466-8
21679 Hg/Creatinine Ratio 13465-0
7242 Cd/Creatinine Ratio 13471-8
21671 As/Creatinine Ratio 13463-5
21668 Inorganic As/Cr Ratio 13825-5

Test Classification

See Individual Test IDs

Profile Information

Test ID Reporting Name Available Separately Always Performed
CDCR Creatinine Conc No Yes
ARCO As Conc No Yes
PBCO Pb Conc No Yes
CDUOM Cd Conc Yes, (order CDU) Yes
HGCO Hg Conc Yes, (order HGOM) Yes