What this test measures
Urine Element Analysis Profile uses ICP-MS to quantify toxic and trace metals in urine. The panel typically includes arsenic (and speciation into inorganic vs organic forms), mercury, cadmium, lead, thallium, cobalt, manganese, nickel, antimony, uranium and other heavy metals. Some labs also report essential trace elements (zinc, copper, selenium, iodine, chromium).
Urine is preferred over blood for several metals: chronic arsenic exposure (urine speciation distinguishes recent fish-related organic arsenic from toxic inorganic forms from groundwater), cumulative cadmium burden (which deposits in kidneys and is slowly excreted), recent inorganic mercury exposure, and uranium. Samples are typically 24-hour collections or, for screening, a spot urine corrected for creatinine.
Why it matters
India has serious chronic heavy metal exposure problems that are best identified through urine testing. Arsenic-contaminated groundwater affects millions across West Bengal, Bihar, Assam, parts of UP and the Ganga plain — chronic exposure causes skin lesions, peripheral neuropathy, cancer and cardiovascular disease. Urinary arsenic speciation is the gold-standard test, distinguishing harmless seafood-derived organic arsenic (arsenobetaine) from toxic inorganic and methylated forms from environmental exposure.
Cadmium exposure from welding, electroplating, battery industry, smoking and pigment work shows up best on urine testing — cadmium has a 20–30 year body half-life, so urinary cadmium reflects long-term burden. Mercury from industrial exposure, dental amalgam, and contaminated ayurvedic preparations is also assessed via urine. This panel is appropriate for occupational health surveillance (in industries listed above), patients with unexplained neuropathy, kidney disease, or skin findings consistent with arsenic, and people from arsenic-affected districts. It is not appropriate as a routine wellness screen for asymptomatic individuals.
How to prepare
Stop multivitamins, mineral supplements (selenium, zinc, copper) and ayurvedic/herbal medicines for at least 72 hours before collection. Avoid seafood and shellfish for at least 48–72 hours before mercury and arsenic testing (organic arsenic from fish creates false-positive total arsenic results unless speciation is done). For 24-hour collection: discard the first morning sample, then collect every urine for the next 24 hours including the next morning. Use trace-element-free collection containers provided by the lab.
Markers & reference ranges
Reference ranges below are typical adult values. Your lab's reported range may differ slightly based on the assay platform and patient demographics — always read your report against the range printed on it.
| Marker | Normal range | If low | If high |
|---|---|---|---|
| Urine Arsenic (Total) (µg/L or µg/g creatinine)[1][2] | < 50 µg/L (general population, no fish) | Below reference — typical background exposure. | Elevated total arsenic — speciation is essential. Organic arsenic from seafood (arsenobetaine) is non-toxic. Inorganic arsenic + MMA/DMA (methylated metabolites) at >35 µg/g creatinine indicates significant environmental exposure (often groundwater). |
| Urine Mercury (µg/L or µg/g creatinine)[1] | < 5 µg/L | Normal background. | Reflects inorganic mercury exposure (dental amalgam, industrial). Elemental mercury vapour exposure (gold/silver work, thermometer breakage) also shows in urine. Methylmercury (fish) is better measured in blood/hair. |
| Urine Cadmium (µg/g creatinine) | < 1 µg/g (non-smoker) · < 3 µg/g action threshold | Normal — minimal cumulative exposure. | >3 µg/g creatinine = significant cumulative burden, risk of kidney tubular damage. Common sources: smoking, welding, electroplating, batteries, pigments. |
| Urine Lead (µg/g creatinine) | < 5 µg/g | Background. | Indicates recent exposure but blood lead is preferred for body burden assessment. Useful in chelation therapy monitoring (post-EDTA mobilisation test). |
Arsenic species — what each tells you
| Species | Source | Toxicity |
|---|---|---|
| Inorganic arsenic (As III + As V) | Groundwater, industrial | High — carcinogen |
| Monomethylarsonic acid (MMA) | Metabolite of inorganic As | Moderate |
| Dimethylarsinic acid (DMA) | Metabolite of inorganic As | Moderate |
| Arsenobetaine | Seafood / shellfish | Non-toxic (excreted unchanged) |
| Arsenocholine | Some seafood | Non-toxic |
Frequently asked questions
Why is 24-hour urine preferred?
It averages out fluctuations from spot urines. Spot samples can be used if corrected for urinary creatinine, but 24-hour gives the most reliable assessment for heavy metals.
Do I need to avoid fish?
Yes — for at least 48–72 hours before arsenic and mercury testing. Fish contains organic arsenic and methylmercury that can confound results unless speciation is done.
My total arsenic is high but I eat fish — is that worrying?
Total urine arsenic does not distinguish seafood-derived (harmless) from environmental (toxic) arsenic. Request speciation — only elevated inorganic + methylated metabolites indicate true exposure concern.
Should I do this as a routine "detox" check?
No. Broad urinary heavy-metal screening on asymptomatic, low-risk individuals is not evidence-based and frequently leads to inappropriate chelation therapy based on lab variation.
When is urine better than blood?
Chronic arsenic (especially groundwater), cumulative cadmium, recent inorganic mercury, and uranium are better in urine. Lead, methylmercury and most essential trace elements are better in blood.
What is "post-EDTA challenge testing"?
A diagnostic procedure where EDTA chelation is given and then urine lead is measured. It is not recommended for routine assessment — guidelines (ACOEM, AAP) advise against "provoked" urine tests because they artificially raise levels and lead to unnecessary chelation.
How long does the report take?
ICP-MS multi-element urine panels typically take 5–7 days; arsenic speciation can take longer.
Related Autoimmune / Rheumatology tests
Tests commonly ordered alongside URINE ELEMENT ANALYSIS PROFILE, or that help interpret an unexpected result.
Sources & references
- ATSDR — Arsenic Toxicological Profile · accessed 2026-05-30T00:00:00.000Z
- WHO — Arsenic Fact Sheet · accessed 2026-05-30T00:00:00.000Z
- CDC — Biomonitoring Summary · accessed 2026-05-30T00:00:00.000Z
- Mayo Clinic Labs — Heavy Metals, Urine · accessed 2026-05-30T00:00:00.000Z
- NIOH Ahmedabad — Occupational Biological Monitoring · accessed 2026-05-30T00:00:00.000Z
Book with Zelnoo
Get your URINE ELEMENT ANALYSIS PROFILE test done at home — transparent prices, NABL-accredited labs.
Zelnoo lets you compare diagnostic test prices across NABL-accredited labs in Mumbai & Thane, book a free home phlebotomist visit, and receive digital reports in 24–48 hours into a consent-first report vault. No subscriptions, no membership fees — pay only for the test you book.
Book URINE ELEMENT ANALYSIS PROFILE now