$17.00
Priced per marker, with baseline labs included. You’ll see your total before you pay.
Heavy metals
Arsenic test
Measures recent arsenic exposure from water, food, or occupational sources.
At a glance
In about 5 days
Most results are ready in about 5 days. Some specialty markers can take up to 21 days.
Check before your draw
This marker has no preparation tag, but it can still need preparation. Contact us before your draw if you’re not sure.
Walk in at Quest
Your lab order arrives by email. Most Quest locations take walk-ins, so bring it with a photo ID.
What it measures
Checks for arsenic, a natural element that can get into well water and some foods, such as rice. It clears from the blood quickly, so this can mostly show very recent exposure, and a urine test is often used instead.
Why it matters for women
Arsenic can pass to a baby during pregnancy, so exposure is worth knowing about if you’re pregnant or planning to be. Water from private wells, which no public utility checks, is a main source of arsenic in the US.
You might check it if…
- your drinking water comes from a private well
- you’re pregnant or planning to be and may have been exposed
- your work involves pesticides, treated wood or metal smelting
- a doctor suggested checking for metal exposure
What your result may mean
High Arsenic: what it may mean
High blood arsenic may mean recent exposure, because arsenic can clear from the blood quickly. It can come from contaminated well water, rice and other foods, or industrial work. Seafood can raise the level too, though much of its arsenic is an organic form that may be less toxic. Short, heavy exposure can cause vomiting, diarrhea and belly pain, while long-term exposure can cause skin changes or numbness in the hands and feet. Arsenic can cross the placenta, so exposure may matter more during pregnancy, and a clinician may follow up with a urine test that can separate seafood arsenic from more toxic forms.
Low Arsenic: what it may mean
Low blood arsenic may mean no recent exposure of concern, and it's the result you'd hope to see. Your body has no known need for arsenic, so a low value may not be a concern. Because arsenic can leave the blood quickly, a low result can't rule out exposure from more than a few days ago. Water from a private well can still carry arsenic, since no public utility checks it. A urine test can pick up exposure over a slightly longer window, and a test of the water itself can check a well.
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These notes provide context and do not diagnose a condition. Not yet available in NY, NJ, RI, HI, ND, SD or WV.