Test library
Urinary Zinc Test
A urine zinc test measures the amount of zinc excreted in urine. It can help assess zinc status and is sometimes used alongside a blood zinc measurement.
Order Zinc, Urine Test
Order online and visit a local collection site, or choose an at-home kit where available. No referral and no insurance required.
Order Zinc, Urine Test- Typical turnaround
- 1-3 business days
- Starting price
- From $129
- Results
- Confidential, online
Quick answer
The urine zinc test measures how much zinc is excreted in a urine sample. Zinc is an essential mineral, and the amount lost in urine can provide information about overall zinc balance. It is often used together with a blood zinc test, and a healthcare provider interprets the results in the context of diet and health.
What this test measures
Zinc is a trace mineral the body uses for immune function, healing, and enzyme activity. The kidneys help regulate how much zinc is kept or lost, so urinary excretion reflects one part of zinc balance. A urine measurement is usually considered alongside blood levels rather than on its own.
The test measures zinc concentration in a urine sample, which may be collected as a spot sample or over a set period depending on the laboratory. Results can be influenced by diet, hydration, and recent supplement use. Standardized collection helps reduce variability.
Clinicians may order urine zinc testing when evaluating unusual zinc losses, monitoring a known deficiency, or investigating a suspected excess. It is not a routine screen on its own. The result is interpreted with blood zinc, dietary history, and other laboratory tests, and it does not diagnose a condition by itself.
- Urine zinc concentration
- 24-hour urine zinc excretion (when collected over time)
- Urine creatinine (to adjust for concentration)
- Serum zinc (often paired)
- Copper
- Ceruloplasmin
- Albumin
Why people order this test
- Assess zinc balance alongside a blood zinc test
- Evaluate unusual zinc losses through the kidneys
- Monitor zinc status in people with absorption problems
- Investigate possible zinc excess from supplements
- Follow up on an abnormal blood zinc result
- Provide information before discussing dietary changes with a provider
How to prepare
Collection instructions depend on the laboratory. Some orders use a spot urine sample, while others request a timed collection. No fasting is usually required, and you should follow the specific instructions provided with the order.
Understanding your results
Results are usually reported within one to three business days. The report shows the urine zinc concentration and any creatinine adjustment. A healthcare provider interprets the value together with blood tests and the person's diet and health history.
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Frequently Asked Questions
What does a urine zinc test measure?
It measures how much zinc is excreted in urine. The result reflects one part of the body's zinc balance.
How is the sample collected?
It may be a spot urine sample or a timed collection, depending on the laboratory. The order provides specific instructions.
Is this test used alone?
It is usually combined with a blood zinc test and other markers, since urine zinc reflects only one part of overall zinc status.
Can diet affect the result?
Yes. Recent intake and hydration can influence urine zinc levels, which is why standardized collection is recommended.
Do I need to fast?
Fasting is not usually required for a urine zinc test. Follow the laboratory's instructions for the specific collection.
Ready to get tested?
Order online and visit a collection site near you, or choose a mail-in kit. No referral and no insurance required.
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