Questions, answered.

Five markers: concentration (how many sperm you have), motility (how many are actually swimming, measured as both progressive and total movement), volume (how much semen), pH, and morphology (how the sperm are shaped). Together these are the core signals of male fertility, the same ones a clinic checks.

Your sample is analyzed by Seaman PRO, the same FDA-cleared analyzer (K252228) that fertility clinics use, run to CLIA moderate-complexity standards. The method is peer-reviewed in the World Journal of Men's Health. You get clinic-grade numbers without the appointment.

Once your sample reaches the lab, the Seaman PRO analysis runs in under 30 seconds and your result lands in your account within a day. It's interactive: you see your own sample, every marker explained in plain language, and you can ask follow-up questions right there through our ChatGPT and Claude integrations. If anything gets flagged, you can book time with one of our fertility doctors.

It's the sweet spot for an honest reading. Under 2 days and your reserves haven't rebuilt, so count and volume read low. Over 5 days and the sperm have been sitting too long, so more come back dead or sluggish and motility reads low. Two to five days is long enough to replenish and short enough to keep quality high.

No. Most lubricants, lotions, and even saliva can kill or slow sperm and throw off your result. If you need something, use only a lubricant labeled fertility-safe. When in doubt, collect without any.

Collect the whole sample. Volume is one of the markers we measure, so a partial sample can read low even when you're perfectly healthy.

No. The kit is built for mail-back testing and keeps your sample stable in transit, so Seaman PRO reads it accurately when it arrives. Just use the prepaid label and send it back the same day you collect.

Wait until you're better. A fever or illness can temporarily lower your count and motility, so a sample taken while you're sick can look worse than your real baseline. Retest once you've recovered.

Yes. Email us at contact@checkcells.com and we'll sort out a replacement, then re-collect after a fresh 2 to 5 day window.

Yes. The Seaman PRO analyzer is FDA-cleared (K252228) and runs to CLIA moderate-complexity standards, the same testing fertility clinics rely on.

Yes. Your result is yours to share, and if anything is flagged you can book directly with one of our fertility doctors.

Test first. A CheckCells result tells you where you actually stand. If you're thinking about freezing for later, reach out and one of our doctors can walk you through your options.

Reach out before you order. A post-vasectomy test has different requirements than a standard fertility check, so email contact@checkcells.com and we'll tell you whether an at-home test fits your situation.

Worth it. A baseline tells you where you stand before there's any pressure, and gives you a number to compare against down the road. It's also a general health signal: sperm quality tracks with overall health, so a low result can be an early heads-up worth acting on.