Home
HelpTest Code PBU Lead, 24 Hour, Urine
Reporting Name
Lead, 24 Hr, UUseful For
Detecting clinically significant lead exposure in 24-hour specimens
This test is not a substitute for blood lead screening.
Method Name
Triple-Quadrupole Inductively Coupled Plasma Mass Spectrometry (ICP-MS/MS)
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Specimen Type
UrineOrdering Guidance
The Centers for Disease Control and Prevention recommends venous blood collection for lead testing; see PBDV / Lead, Venous, with Demographics, Blood
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: 3 mL
Collection Instructions:
1. Collect urine for 24 hours.
2. Refrigerate specimen within 4 hours of completion of 24-hour collection.
3. 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.
An entire 24-hour urine collection is also acceptable.
Additional Information:
1. Starting and ending times of collection are required.
2. Follow instructions in Urine Collection in Specimen Collection and Preparation in General Information.
Specimen Minimum Volume
1.5 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Urine | Refrigerated (preferred) | 28 days | |
| Ambient | 28 days | ||
| Frozen | 28 days |
Reject Due To
All specimens will be evaluated at Mayo Clinic Laboratories for test suitability.Special Instructions
Reference Values
0-17 years: Not established
≥18 years: <2 mcg/24 h
Day(s) Performed
Monday through Friday
CPT Code Information
83655
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| PBU | Lead, 24 Hr, U | 5677-0 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| 31085 | Lead, 24 Hr, U | 5677-0 |
| TM83 | Collection Duration | 13362-9 |
| VL84 | Urine Volume | 3167-4 |