Minerals & Metals

Arsenic Blood Test

An arsenic blood test measures the level of arsenic in your bloodstream, with a primary focus on inorganic arsenic -- the most toxic form. Inorganic arsenic is commonly found in contaminated drinking water, certain foods such as rice, and industrial settings. Chronic exposure has been associated with an increased risk of cancer, cardiovascular disease, and nerve damage. This test helps detect elevated arsenic levels and supports early intervention to reduce health risks.

Why Test Arsenic?

Testing for arsenic is recommended in cases of suspected arsenic poisoning from contaminated water, food, or workplaces. It is particularly relevant for people working in industries where arsenic is used or produced, for monitoring long-term exposure in high-risk areas, and for health surveillance in populations exposed to chronic arsenic contamination.

What Do High Arsenic Levels Mean?

Moderately elevated levels may suggest recent or low-level exposure through food, water, or the environment. High levels (above 0.67 micromol/L or 50 microg/L) may indicate significant arsenic exposure and should prompt further investigation to identify the source and assess health risks. Chronic high exposure is linked to cancer of the skin, lung, and bladder, cardiovascular disease, and peripheral neuropathy.

What Do Low Arsenic Levels Mean?

Normal arsenic levels typically range between 0.01 and 0.05 micromol/L in individuals with no known exposure. Low levels indicate no significant arsenic burden and are the expected healthy result.

Symptoms to Watch For

  • Chronic fatigue
  • Skin changes such as darkening, thickening, or lesions
  • Numbness or tingling in hands and feet
  • Nausea and digestive problems
  • Persistent headaches
  • Muscle weakness
  • Cognitive difficulties

Who Should Get Tested?

  • People suspected of arsenic exposure from water, food, or environment
  • Workers in industries using or producing arsenic
  • Individuals living in regions with known arsenic contamination
  • Anyone with unexplained neurological symptoms or skin changes
  • Populations undergoing health surveillance for chronic arsenic exposure

How to Prepare for Your Test

No special preparation is required for this test. Bring valid ID to your appointment.

Frequently Asked Questions

Can seafood affect my arsenic test results?
Yes. Some seafood contains non-toxic organic arsenic compounds that can temporarily raise blood arsenic levels without posing health risks. Your healthcare provider can help distinguish between organic and inorganic arsenic exposure.
What is the difference between organic and inorganic arsenic?
Inorganic arsenic (found in contaminated water, soil, and some foods) is highly toxic and associated with cancer and organ damage. Organic arsenic (found mainly in seafood) is considered much less harmful and is quickly excreted by the body.
How is arsenic poisoning treated?
The most important step is removing the source of exposure. In severe cases, chelation therapy may be used under medical supervision to help the body eliminate accumulated arsenic. Long-term monitoring and supportive care may also be required.
NW

Reviewed by

Wellth Team

Wellth

Our content is written and reviewed by Wellth, and fact-checked against peer-reviewed research and current Swedish clinical guidelines.

Learn more about our team →

Medical Disclaimer

The information on this page is provided for informational purposes only and does not constitute professional medical advice, diagnosis, or treatment. Wellth provides health information and testing services but is not a substitute for clinical care. Always consult a qualified healthcare provider if you have questions about a medical condition. If you are experiencing severe or urgent symptoms, contact your doctor or call 1177 Vårdguiden. Blood test results should be interpreted by a qualified healthcare professional in the context of your complete medical history.