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Test Code LAB5176 Thallium, 24 Hour, Urine

Important Note

Mayo's test code: TLU

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Reporting Name

Thallium, 24 Hr, U

Specimen Type

Urine


Necessary Information


24-Hour volume (in milliliters) is required.



Specimen Required


Patient Preparation: High concentrations of gadolinium and iodine are known to interfere with most metal 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 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 into a plastic 10-mL urine tube (T068) or a clean, plastic aliquot container with no metal cap or glued insert.

4. See Metals Analysis Specimen Collection and Transport for complete instructions.

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


Reject Due To

  All specimens will be evaluated at Mayo Clinic Laboratories for test suitability.

Specimen Stability Information

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

Specimen Minimum Volume

0.3 mL

Day(s) Performed

Tuesday, Friday

Specimen Retention Time

14 days

Report Available

2 to 5 days

Reference Values

0-17 years: Not established

≥18 years: <2 mcg/24 hours

Useful For

Detecting toxic thallium exposure in 24-hour urine collections

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

Urine Preservative Collection Options

Note: The addition of preservative or application of temperature controls must occur within 4 hours of completion of the collection.

Ambient (Plain)

OK

Refrigerate (Plain)

Preferred

Frozen (Plain)

OK

50% Acetic Acid

OK

Boric Acid

No

Diazolidinyl Urea

No

6M Hydrochloric Acid

OK

6M Nitric Acid

OK

Sodium Carbonate

No

Thymol

No

Toluene

No