Bestseller 
Water
Basic Radiological Water Kit
Accuracy Guaranteed
Est. 2022 · 40 lab-certified tests
Know what's in
Know what's in
your home.
Water. Mold. Allergens. Radon. Drug residue. Lab-certified kits you mail back. Results in your inbox in 5 days.
40
Tests available
5d
Avg turnaround
ISO
17025 accredited
A letter from our founder
"The air we breathe, the water we drink, the dust that settles on our pillows — these quietly shape our health. I built BioDwell because the people I love deserve to know, not guess."
— Dr. Mark Arvin, Founder & Chief Science Officer
14 tests
Water
City water. Well water. PFAS. Heavy metals. Radiological. If it flows into your home, we can test it.
Shop water → 4 tests
Drugs of Abuse
Meth. Fentanyl. Surface residue you cannot see. For new rentals, home purchases, and spaces with history.
Shop drugs of abuse → 13 tests
Allergen
Cat. Dog. Dust mite. Rodent. Cockroach. Find the invisible trigger behind the sniffles.
Shop allergen → 8 tests
Mold
ERMI. EMMA. HERTSMI-2. DNA-level mold diagnostics — the gold standard. Delivered to your door.
Shop mold → 1 tests
Radon
Invisible. Odorless. The #2 cause of lung cancer. A 2-day test that could change everything.
Shop radon →Four steps. That's it.
01
Pick your test
Not sure what to order? Chat with us. We'll point you at the smallest kit that answers your question.
02
Collect
Most samples take 5 minutes. Wipe, swab, fill, or leave a cassette in a room overnight. Video + printed instructions.
03
Mail it back
Pre-paid return envelope. Drop it in any mailbox. Tracked every step to the lab.
04
Get your results
Plain-English report emailed to you, backed by raw lab data. Consultation included on request.
Most ordered
View all 40 → The greatest hits.
Finally — a home test I actually trusted. The report was clear, the lab was legit, and when I had questions someone answered them.
Not a wellness fad.
Just lab data.
01
Accredited labs only
ISO-17025 facilities. EPA-compliant methods. Same standards your commercial inspector uses.
02
Plain-language reports
Layperson summary right next to the technical data. Know what mattered. Know what didn't.
03
No subscriptions
Buy what you need. We'll ship it, analyze it, and leave you alone. Re-test when you're ready.