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Test Code 9096 Thallium, 24 Hour, Urine

Additional Codes

Mayo Test ID
TLU

Reporting Name

Thallium, 24 Hr, U

Useful For

Detecting toxic thallium exposure in 24-hour urine specimens

Performing Laboratory

Mayo Medical Laboratories in Rochester

Specimen Type

Urine


Necessary Information


24-Hour volume is required.



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 a clean, plastic aliquot container with no metal cap or glued insert

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. Aliquot 10 mL in a plastic 10-mL urine tube (T068) or a clean, plastic aliquot container with no metal cap or glued insert.

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

Additional Information: See Urine Preservatives-Collection and Transportation for 24-Hour Urine Specimens in Special Instructions for multiple collections.


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

0.3 mL

Specimen Stability Information

Specimen Type Temperature Time
Urine Refrigerated (preferred) 28 days
  Ambient  28 days
  Frozen  28 days

Reference Values

0-17 years: not established

≥18 years: <2 mcg/24 hour

Day(s) and Time(s) Performed

Tuesday, Friday; 8 a.m.

Test Classification

This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. This test has not been cleared or approved by the U.S. Food and Drug Administration.

CPT Code Information

83018

LOINC Code Information

Test ID Test Order Name Order LOINC Value
TLU Thallium, 24 Hr, U 5746-3

 

Result ID Test Result Name Result LOINC Value
8603 Thallium, 24 Hr, U 5746-3
TIME2 Collection Duration 13362-9
VL12 Urine Volume 3167-4

Method Name

Inductively Coupled Plasma-Mass Spectrometry (ICP-MS)

Urine Preservative Collection Options

Ambient

Yes

Refrigerated

Preferred

Frozen

Yes

6N HCl

Yes

50% Acetic Acid

Yes

Na2CO3

No

Toluene

Yes

6N HNO3

Yes

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.