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Lead and Creatinine, Urine — Mass per Specimen, Turbidimetric

Published: August 9, 2026Updated: August 16, 2026

Measures lead and creatinine in urine to help assess lead exposure while accounting for differences in urine concentration.

Quick summary

["This urine test helps evaluate lead exposure and can identify a potentially incomplete or dilute urine collection."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
110366-2
Short code
Lead/Creat Msmt Ur
Synonyms
Lead/Creat Msmt Ur
Category
kidney
Sample
urine
Container
Sterile urine container
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Specimen volume
10 mL
Stability
Room temperature: 2h, Refrigerated: 24h, Frozen: 7d
Hemolysis max
0
Lipemia max
0
Icterus max
0
TAT
4–24 hours
Order
routine

What is this test?

This test measures the amount of lead and creatinine in urine. Creatinine is measured by a turbidimetric method and can help assess how concentrated the urine sample is.

Why might I need this test?

Urine lead testing may be used to screen for or follow exposure to lead, especially after workplace contact, environmental exposure, or ingestion of contaminated materials. Creatinine is commonly included to help interpret the lead result and check the adequacy of the collection.

How is the test performed?

A urine specimen is collected and analyzed in the laboratory. If a 24-hour collection is requested, all urine produced during the specified period must be collected in the provided container.

How do I prepare for the test?

Follow the laboratory's collection instructions carefully, including the collection period and container. Tell the laboratory about recent work, hobbies, travel, or other possible lead exposure, and ask whether any medicines or supplements should be paused.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Urine lead and creatinine

Frequently asked questions

Does this test require fasting?
Fasting is generally not required, but follow any instructions provided by the laboratory or ordering clinician.
Why is creatinine included with urine lead?
Creatinine helps show how concentrated the urine is, which can affect the interpretation of a urine lead measurement.
How should a 24-hour urine collection be completed?
Collect all urine during the specified 24-hour period, including the final portion, and record the collection times. If anything is missed, ask the laboratory how to proceed.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.

This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy