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Test Code HMSRU Heavy Metals Screen, Random, Urine

Performing Laboratory

Mayo Medical Laboratories in Rochester

Reporting Name

Heavy Metals Scrn, Random, U

Specimen Type

Urine


Specimen Required


Patient Preparation:

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.

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: 2 mL

Collection Instructions:

1. Collect a random urine specimen.

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


Reject Due To

Hemolysis

NA

Lipemia

NA

Icterus

NA

Other

NA

Specimen Stability Information

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

Specimen Minimum Volume

2 mL

Day(s) and Time(s) Performed

Monday through Friday; 3 p.m. - 9 p.m.; Saturday; 8 a.m. – 3 p.m./Continuously

Specimen Retention Time

14 days

Analytic Time

1 day

Reference Values

ARSENIC

0-35 mcg/L

Reference values apply to all ages.

 

LEAD

0-4 mcg/L

Reference values apply to all ages.

 

CADMIUM

0-15 years: not established

≥16 years: 0.0-1.3 mcg/L

 

MERCURY

0-15 years: not established

≥16 years: 0-9 mcg/L

Toxic concentration: >50 mcg/L

The concentration at which toxicity is expressed is widely variable between patients. 50 mcg/L is the lowest concentration at which toxicity is usually apparent.

Testing Algorithm

See Porphyria (Acute) Testing Algorithm in Special Instructions.

Method Name

Inductively Coupled Plasma-Mass Spectrometry (ICP-MS)

Test Classification

See Individual Test IDs

CPT Code Information

82175-Arsenic

82300-Cadmium

83655-Lead

83825-Mercury

LOINC Code Information

Test ID Test Order Name Order LOINC Value
HMSRU Heavy Metals Scrn, Random, U In Process

 

Result ID Test Result Name Result LOINC Value
89889 Arsenic, Random, U 5586-3
60156 Cadmium, Random, U 5611-9
60248 Mercury, Random, U 5689-5
60246 Lead, Random, U 5676-2

Clinical Information

See individual test descriptions for:

-ASRU / Arsenic, Random Urine

-PBRU / Lead, Random Urine

-CDRU / Cadmium, Random Urine

-HGRU / Mercury, Random Urine

Cautions

No significant cautionary statements

Method Description

See individual test descriptions for:

-ASRU / Arsenic, Random Urine

-PBRU / Lead, Random Urine

-CDRU / Cadmium, Random Urine

-HGRU / Mercury, Random Urine

Profile Information

Test ID Reporting Name Available Separately Always Performed
ASRU Arsenic, Random, U Yes Yes
PBRU Lead, Random, U Yes Yes
CDRU Cadmium, Random, U Yes Yes
HGRU Mercury, Random, U Yes Yes