Urologists - At Home Sperm Tests Complement Treatment

Revolutionize Men’s Health

Our technology has never been just about measuring sperm counts. It’s about men — and finding better ways for men to manage their reproductive health. You can refer patients to Trak® Fertility and offer them a customized coupon code for a discount off of the Trak® System.

Fill out the form below for more details.

Vasectomy (VAS) Reversal

After a vasectomy reversal, urologists can use Trak Male Fertility Testing System to enable and empower their patients to track their progress back into fertility as they heal from surgery.

Patients and doctors love Trak® because it provides a feedback mechanism during those critical months post surgery without having the patient immediately return for a full semen analysis. Patients can report back to their urologists using the Trak® Sperm Count Enhancement Protocol (TCEP). Armed with their Trak results, they can schedule follow-up appointments and any additional testing necessary with a strengthened understanding of their male reproductive health.

Varicocele Repair or Varicocelectomy

Man conducting an at-home Trak test.

After a varicocele repair or varicocelectomy, urologists may want to enable men to track their change in fertility. They can use Trak Male Fertility Testing System to enable men to track their change in fertility (sperm count/sperm concentration) after the surgery from the comfort of their own home.

In these cases, men may not have to return for a full semen analysis, but rather could track their progress and convey the results to their doctors. Periodically, the urologist may still request the patient come in for another full work-up, but the Trak Male Fertility Testing System is designed to help men check progress in their sperm count over several months before requiring a more time consuming and costly semen analysis.

Fertility Treatment

Couple reading a Man's Guide to Reproductive Health by Trak.

Doctors are using Trak Male Fertility Testing System to complement their fertility treatments, helping male patients improve their reproductive health.

Trak enables and empowers the patient to track his own progress on a regular basis without having to return to the doctor’s office for a full semen analysis.  This progress can be shared with the doctor and used to complement the doctor’s treatment plan.

Register to Become a Trak® Partner

Please fill out the form below to get more information about Trak® and to receive a custom coupon code for your patients.

The Trak® Sperm Count Enhancement Protocol (TCEP)

Used as a guide for men who want to enhance their fertility and improve their sperm concentration. Patients can report back to their Urologists over the next several months and schedule follow up appoints and testing, as necessary, armed with their Trak results.

Download .PDF

90-Day Challenge-Improve Sperm Count

You can improve your sperm count and fertility in just 90 days!


Sperm count is the most important metric
in measuring male reproductive health

Trak is the only product with
CentriFluidic™ Technology

to get the most precise read on your sperm count
available in the market

Sperm count is dynamic
You can affect your sperm count in
less than 90 days

Can you get pregnant in less than 12 months? Let us help you try.

Buy Trak and
get your baseline


Take the online assessment and get
personalized recommendations
for improving


Test yourself for each of the next 3 months to see your progress


Have you boosted your count? We want to hear your story!

Share Your Story

Trak was designed and created by the best scientists
in sperm home testing and backed by urologists and experts in fertility

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Sperm counts are affected by lifestyle choices
including diet, exercise, weight, sleep, stress, heat, etc.

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Remember – 50% of fertility problems are attributed to men

Be part of the solution.

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Who We Are

A Team Committed to Male Reproductive Health

Trak is designed and built by Sandstone Diagnostics.

See How We’re Changing Men’s Health

About the Trak Team

We are a team of scientists, engineers, software developers, and business professionals. More importantly, we are fathers, mothers, brothers, sisters, and friends who care deeply about improving men’s reproductive health and helping people start their family.

Founded in 2012 in part by government scientists from Sandia National Laboratories. Sandstone’s mission is to provide innovative, data-driven tools to help men assess, manage, and improve their reproductive health.

Who We Are

Karen Drexler, Sandstone Diagnostics CEO

Karen Drexler

Greg Sommer, Sandstone Diagnostics Founder & CSO

Greg Sommer
Founder and CSO

Ulrich Schaff, Sandstone Diagnostics Founder & CTO

Ulrich Schaff
Founder and CTO

Sara Naab, Sandstone Diagnostics Founder & Trak Coach

Sara Naab
Founder and Trak Head Coach

Paul Manners, Sandstone Diagnostics CFO

Paul Manners

Marc Rosenstock, Sandstone Diagnostics VP of Marketing

Marc Rosenstock
VP of Marketing

Clinical and Scientific Advisors

Michael Eisenberg, MD, Sandstone Diagnostics Chief Medical Officer

Michael Eisenberg, MD
Director of Reproductive Medicine, Stanford University Medical Center

Jamin Brahmbhatt, MD
Co-Director, PUR Clinic; Co-Founder, Drive for Men’s Health

Joseph Alukal, MD
Clinical Associate Professor, NYU Langone Health Department of Urology

Douglas Carrell, PhD, HCLD
Professor of Surgery, Human Genetics, and ObGyn


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Customer Stories

IT’S Storytime

Trak was a game changer.
It gave me the motivation I needed to get my health on Trak”.

Jay and Toni had been struggling to conceive for just under 12 months when they decided to purchase Trak. The first test was a little disappointing to realize that Jay’s sperm count was a little lower than it should be, but it gave them hope that there was something they could do.

After filling out the health assessment in the app, Jay realized there were a number of changes he could make in his life that would improve his health and hopefully, his sperm count.

After two months of trading chips for bell peppers, Jay was pumped to learn that his sperm count was “Optimal.” A month later, Toni surprised him with a positive pregnancy test result!

More Customer Stories

“I was undergoing fertility treatment (varicocele surgery and later IVF) and found myself needing multiple expensive semen analyses ($200+ a pop in my area). Trak gave me a cheap way to supplement the clinical information in between lab tests and roughly monitor my post-procedure progress.”

“I’ll never forget having to wait to go into the ‘sample room’ with my husband with the nurse coming out every 15 minutes saying ‘So sorry, our previous client is not done yet’. And then there was the poor man that walked out of there after nearly 45 minutes of trying to perform under pressure!  When I learned of Trak, I kept thinking of that poor man and how he could have skipped all that and used Trak. I’ve since heard similar stories from other wives about their poor husbands. Here’s to Trak! Eliminating performance anxiety and allowing real tracking of a real fertility issue!”

“I work in the fertility industry and heard about Trak via a colleague. I found the test to be useful and it helped me be confident going into the conception phase. We were successful and are expecting a daughter in December.”

Do you have a story to share? We want to hear from you!

Share Your Story

Research and Technology

Trak Technology and Research

Male infertility affects millions of couples every year. Our team is working to help men become dads by redefining what’s possible.

watch the video

Innovation with Purpose

Our technology has never been just about measuring sperm counts. It’s about men — and finding better ways for men to manage their reproductive health. We’re committed to building tools and data driven analytics that unlock new men’s health insights that can help couples get pregnant faster.

Affiliations & Sponsorships

Latest Research by Trak

Leading a Revolution in Male Reproductive Health

Sperm are poorly understood. Until now, scientific knowledge around how men’s general health and lifestyle impacts sperm production and fertility has been hampered by relying on expensive, inconvenient, and imprecise lab-based semen analysis techniques. Trak is accelerating the field by merging highly precise home testing with digital data tools: an unprecedented approach to a better understanding of men’s reproductive health.


The Trak® At-Home Testing System is FDA-cleared to be just as accurate as the gold standard lab test.

FDA 510(k) Clearance


Trak®'s digital tools uniquely capture health and lifestyle data alongside sperm count results.

100% Private and Anonymous

Trak Male Fertility Testing System - 2 test kit

Home - Trak At Home Sperm Tests Fuel Male Fertility

Men, Meet Trak® Fertility

Test and Start Improving Your Sperm Count At Home

Buy Trak

We Help Men Become Dads

Your sperm count is not set in stone. Trak’s award winning solutions are designed to deliver everything you need to test and take control of your reproductive health. Immediately, privately, and on your home turf. See why men are getting into the fertility game with Trak.

More Sperm, Faster Conception
Maximize your chances of conception.

Trusted By Top Urologists
Determine if your fertility is at risk and whether you should see a physician.

Personalized Guidance
Get instant, data-driven health & lifestyle insights to improve male fertility.

FDA Cleared
Fast, easy to use at home, and as accurate as a lab test.


A New Way to Approach Your Fertility


Use Trak® Male Fertility Testing System to measure your sperm concentration and semen volume as LOW, MODERATE, or OPTIMAL for conception. No matter what your result, Trak will be right there with you every step of the way. Our comprehensive approach arms you with the tools you need to get your questions answered, improve your fertility, and reach your reproductive goals.


Trak helps you take control of your reproductive health on your terms. Download the App or take our free online assessment to get personalized nutrition, fitness, and lifestyle advice developed in partnership with leading urologists and backed by the latest scientific literature, research, and medical guidelines.


Sperm count is a unique health parameter that can rise and fall for a lot of different reasons. With Trak® Fertility, you can learn if common risk factors in your health and lifestyle are affecting your fertility and what you can do to improve it.

The Trak Male Fertility Testing System comes with a reusable Trak Engine and 4 sperm count tests including:

  • Semen volume cups to collect your sample and test for hypospermia (low semen volume)
  • Trak Props to measure your sperm count

Test monthly to optimize your chances of conception as you work to improve your sperm count over time.

NEW! We are proud to offer Trak Approved Items that we have evaluated and recommend to help you maximize your sperm production. 

Trak also offers Refill Kits with two additional tests for continued testing and tracking.

Digital Fertility Tools For Men

Only Trak provides the personalized insights and feedback you need to maximize your sperm production and fertility. Take our free online assessment or download the Trak: Sperm Health & Fertility App to evaluate your health and lifestyle risks and get personalized recommendations to improve your sperm count and fertility to get pregnant faster. All of Trak’s content is curated by Urologists who specialize in male reproductive health.


How Trak Works - Test Sperm Count At Home

How The Trak Male Fertility Test Works

A new spin on male fertility testing that delivers more than just results. Trak’s patented precision-engineered technology uses centrifugal force to isolate and quantify sperm.

How Trak Works

The Trak System includes everything you need to test your sperm count and semen volume at home. No trips to the clinic. No mailing in your sample. No hassle. Testing is easy, immediate, and accurate.




Collect a sample into the Trak Semen Volume Cup and read your semen volume.



Load the sample into a test Prop and attach to the Engine.




After the 6-minute spin, read your sperm count results.

How To Read Trak Results

Accurate, Easy and Immediate
Trak is the only FDA cleared, at-home sperm test that measures sperm concentration into 3 categories: Low, Moderate, or Optimal for conception. The Trak result categories are based on World Health Organization guidelines and clinical studies that show having an Optimal sperm concentration statistically reduces the influence of other sperm parameters including motility and morphology on fertility outcomes.  To put it simply, the higher the count, the better your chances of conception.

In some cases, a low sperm count or semen volume can indicate more serious underlying health conditions in men like low testosterone, diabetes, or urological disorders. If a Trak user continuously tests low, it’s important that he make an appointment with a reproductive urologist.


Above 55 M/mL
Linked to faster pregnancy.

55 M/mL


Between 15 and 55 M/mL
May take longer to conceive.

15 M/mL


15 M/mL or below
May be at risk for infertility and should consult a physician.

According to the World Health Organization (WHO), men who regularly produce less than 1.5 milliliters of semen may be at risk for infertility, as low volume can inhibit the ability of sperm to reach the female reproductive tract. Low semen volume can also be associated with reduced sexual function and pleasure, low testosterone, and an increased risk of other urological conditions and chronic diseases.

What’s In The
Trak System

  1. Engine
  2. Props
  3. Trak semen volume cups
  4. Droppers
  5. Seal before spin stickers
  6. Bottle of control solution
  7. AA batteries
  8. Owner’s Guide
  9. 27-page Man’s Guide to
    Reproductive Health


What’s in the
Trak Refill Kit