The honest answer
Can you test for microplastics in your body?
Short version: not the way you can test your blood pressure or your cholesterol. Detecting microplastics inside the human body is still mostly something that happens in research labs. Here's the longer, honest version — what's possible, what isn't, and what's actually worth doing.
Why it's harder than it sounds
Studies that find microplastics in human blood, brain tissue, or stool are real — but they're done with specialized instruments, contamination-controlled clean rooms, and trained analysts. There is no standardized clinical test a doctor orders, no agreed-upon unit of measurement, and — critically — no established “normal” level. A result of “X particles” means little when nobody knows what a typical X is.
That's the gap between “microplastics were detected in human samples” (true, repeatedly) and “you can get your body tested” (not really, not yet, not in any interpretable way).
What is available right now
- At-home blood test kits. A handful of companies sell finger-prick or mail-in microplastics blood tests, typically $130–$150. They report a particle count — not a diagnosis. See our explainer on microplastics blood tests below.
- Urine, as a citizen-science sample. Urine is the easiest sample a person can provide. The Water Test runs a citizen-science urine kit that visualizes suspected microplastic particles. It is a particle experiment, not a medical test.
- Research participation. Universities periodically recruit volunteers for microplastics studies — the most rigorous way your sample gets analyzed, though you don't get an individual clinical result.
What no test can tell you yet
Whatever sample you test, be clear-eyed about the limits: no consumer test can give you a total body burden, a trend over time you can trust, or a health interpretation. Anyone selling a microplastics test as a way to “screen” for disease or measure health risk is getting ahead of the science. The useful framing is exposure and curiosity, not diagnosis.
What you can actually do today
Here's the reframe that's genuinely actionable: you can't easily measure what's already in you, but you can measure — and reduce — what's still going in. Drinking water is the most direct, most controllable exposure route, and it's the one you can test at home in about 15 minutes for $50.
If the body is what you're curious about, two honest next steps:
At-home urine kit →
A $50 citizen-science pilot kit that visualizes suspected microplastic particles in a urine sample.
At-home water kit →
Start with what you can control: test your drinking water for microplastics for $50.
Frequently asked
Can you test for microplastics in your body?
Not the way you'd test cholesterol. Detecting microplastics in blood or tissue is still mostly a research-laboratory procedure — there is no standard, validated, clinically interpreted body panel a doctor orders. A few companies sell at-home microplastics blood tests, and urine is being studied as an accessible sample, but none of these are diagnostic tests and none come with a 'normal range.'
How do you know if you have microplastics in your body?
Realistically, you almost certainly do — studies have found microplastics in the large majority of human blood, stool, and tissue samples tested. A test can show particles in a specific sample you provide; it cannot tell you a total body burden or what it means for your health.
Is there an at-home test for microplastics in the body?
There are at-home microplastics blood-test kits sold by several companies, and The Water Test runs a citizen-science urine kit that visualizes suspected microplastic particles in a urine sample. These are particle-visualization and exposure experiments — not medical or diagnostic tests.
What's the most useful thing I can actually test?
Your exposure. You can't easily measure what's already in your body, but you can measure what's still going in — most directly, your drinking water. An at-home water kit shows you that in about 15 minutes.
Related: microplastics blood tests, explained · microplastics urine test