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Test Code HMSU Heavy Metals Screen, 24 Hour, Urine

Reporting Name

Heavy Metals Scrn, 24 Hr, U

Profile Information

Test ID Reporting Name Available Separately Always Performed
ASHMS Arsenic, 24 Hr, U Yes, (order ASU) Yes
PBS Lead, 24 Hr, U Yes, (order PBU) Yes
CDHMU Cadmium, 24 Hr, U Yes, (order CDU) Yes
HGHMS Mercury, 24 Hr, U Yes, (order HGU) Yes

Performing Laboratory

Mayo Medical Laboratories in Rochester

Specimen Type

Urine


Specimen Required


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

Submission Container/Tube: Plastic, 10-mL urine tube (T068)

Specimen Volume: 10 mL

Collection Instructions:

1. Collect urine for 24 hours.

2. Refrigerate specimen within 4 hours of completion of 24-hour collection.

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

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

Additional Information:

1. 24-Hour volume is required.

2. See Urine Preservatives in Special Instructions for multiple collections.

3. 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.


Barnes-Jewish Hospital Note:
Submit an entire 24-hour urine collection in a plain, brown urine container.

Additional Information:

1. Starting and ending times of collection are required.
2. Follow instructions for Urine Collection in Special Instructions.

3. Urine timed measurement is performed at an additional charge per 24-hour collection (CPT Code-81050).


Specimen Minimum Volume

2 mL

Specimen Stability Information

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

Reference Values

ARSENIC

0-35 mcg/specimen

Reference values apply to all ages.

 

LEAD

0-4 mcg/specimen

Reference values apply to all ages.

 

CADMIUM

0-15 years: not established

≥16 years: 0.0-1.3 mcg/specimen

 

MERCURY

0-15 years: not established

≥16 years: 0-9 mcg/specimen

Toxic concentration: >50 mcg/specimen

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

Day(s) and Time(s) Performed

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

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
HMSU Heavy Metals Scrn, 24 Hr, U In Process

 

Result ID Test Result Name Result LOINC Value
8678 Cadmium, 24 Hr, U 5612-7
8644 Arsenic, 24 Hr, U 5587-1
2549 Mercury, 24 Hr, U 6693-6
8600 Lead, 24 Hr, U 5677-0
2548 Pb Concentration 20625-0
26627 Hg Concentration 5689-5
2547 As Concentration 21074-0
TIME4 Collection Duration 13362-9
VL16 Total Volume 3167-4
2654 Cd Concentration 5611-9

Method Name

Inductively Coupled Plasma-Mass Spectrometry (ICP-MS)

Urine Preservative Collection Options

Ambient

No

Refrigerated

Preferred

Frozen

Yes

6N HCl

Yes

50% Acetic Acid

Yes

Na2CO3

No

Toluene

Yes

6N HNO3

No

Boric Acid

No

Thymol

No

Barnes-Jewish Hospital Additional Information:
For BJH Laboratory Use Only
Laboratory Processing Instructions:
BJH Chemistry will forward to the performing laboratory.