Clinical-grade semen analysis.
Mail-in convenience.
Fellow provides peer-reviewed, mail-in semen analysis for clinics looking for improved compliance and a patient-friendly solution to fertility testing.¹
Trusted by leading urologists and reproductive specialists
Where clinical efficiency meets clinical excellence
Fellow's CLIA-certified diagnostics lab combines the ease of a mail-in semen analysis with peer-reviewed performance to provide clinically valid results¹ in less than 2 business days from when a specimen reaches our laboratory.
Fellow supports:
Vasectomy Test
Vasectomy Test
The convenient way for patients to test the success of their vasectomy.
The convenient way for patients to test the success of their vasectomy.
Semen Analysis + Cryopreservation
Semen Analysis + Cryopreservation
Following a full semen analysis, store your sperm to be used in fertility treatments with a partner in the future.
Following a full semen analysis, store your sperm to be used in fertility treatments with a partner in the future.
Success Stories
Helping thousands of providers move patient care forward
"As a high-volume vasectomy provider, Fellow post-vasectomy testing is the perfect solution for my patients as well as my practice. My patients are now able to complete testing from the privacy of their own home, and Fellow's results delivery has decreased call volume previously required to communicate results."
David Robbins, MD
Urological Consultants of Florida, Miami, FL
"I love the option of Fellow mail-in semen analysis testing for my patients! It’s so convenient. Fellow makes a stressful time less stressful by being able to start a workup from the comfort of your home."
Andrea Palmer, MD
OBGYN at Fenom Women’s Care, Fort Worth, TX
"I am surprised by just how fast results come to the clinic. And patients are very satisfied. Results are very explanatory and very detailed."
Julia (Patient care coordinator)
UCSF, San Francisco, CA
"As a high-volume vasectomy provider, Fellow post-vasectomy testing is the perfect solution for my patients as well as my practice. My patients are now able to complete testing from the privacy of their own home, and Fellow's results delivery has decreased call volume previously required to communicate results."
David Robbins, MD
Urological Consultants of Florida, Miami, FL
"I love the option of Fellow mail-in semen analysis testing for my patients! It’s so convenient. Fellow makes a stressful time less stressful by being able to start a workup from the comfort of your home."
Andrea Palmer, MD
OBGYN at Fenom Women’s Care, Fort Worth, TX
"I am surprised by just how fast results come to the clinic. And patients are very satisfied. Results are very explanatory and very detailed."
Julia (Patient care coordinator)
UCSF, San Francisco, CA
"As a high-volume vasectomy provider, Fellow post-vasectomy testing is the perfect solution for my patients as well as my practice. My patients are now able to complete testing from the privacy of their own home, and Fellow's results delivery has decreased call volume previously required to communicate results."
David Robbins, MD
Urological Consultants of Florida, Miami, FL
"I love the option of Fellow mail-in semen analysis testing for my patients! It’s so convenient. Fellow makes a stressful time less stressful by being able to start a workup from the comfort of your home."
Andrea Palmer, MD
OBGYN at Fenom Women’s Care, Fort Worth, TX
"I am surprised by just how fast results come to the clinic. And patients are very satisfied. Results are very explanatory and very detailed."
Julia (Patient care coordinator)
UCSF, San Francisco, CA
"As a high-volume vasectomy provider, Fellow post-vasectomy testing is the perfect solution for my patients as well as my practice. My patients are now able to complete testing from the privacy of their own home, and Fellow's results delivery has decreased call volume previously required to communicate results."
David Robbins, MD
Urological Consultants of Florida, Miami, FL
"I love the option of Fellow mail-in semen analysis testing for my patients! It’s so convenient. Fellow makes a stressful time less stressful by being able to start a workup from the comfort of your home."
Andrea Palmer, MD
OBGYN at Fenom Women’s Care, Fort Worth, TX
"I am surprised by just how fast results come to the clinic. And patients are very satisfied. Results are very explanatory and very detailed."
Julia (Patient care coordinator)
UCSF, San Francisco, CA
Success Stories
Helping thousands of providers move patient care forward
"As a high-volume vasectomy provider, Fellow post-vasectomy testing is the perfect solution for my patients as well as my practice. My patients are now able to complete testing from the privacy of their own home, and Fellow's results delivery has decreased call volume previously required to communicate results."
David Robbins, MD
Urological Consultants of Florida, Miami, FL
"I love the option of Fellow mail-in semen analysis testing for my patients! It’s so convenient. Fellow makes a stressful time less stressful by being able to start a workup from the comfort of your home."
Andrea Palmer, MD
OBGYN at Fenom Women’s Care, Fort Worth, TX
"I am surprised by just how fast results come to the clinic. And patients are very satisfied. Results are very explanatory and very detailed."
Julia (Patient care coordinator)
UCSF, San Francisco, CA
"As a high-volume vasectomy provider, Fellow post-vasectomy testing is the perfect solution for my patients as well as my practice. My patients are now able to complete testing from the privacy of their own home, and Fellow's results delivery has decreased call volume previously required to communicate results."
David Robbins, MD
Urological Consultants of Florida, Miami, FL
"I love the option of Fellow mail-in semen analysis testing for my patients! It’s so convenient. Fellow makes a stressful time less stressful by being able to start a workup from the comfort of your home."
Andrea Palmer, MD
OBGYN at Fenom Women’s Care, Fort Worth, TX
"I am surprised by just how fast results come to the clinic. And patients are very satisfied. Results are very explanatory and very detailed."
Julia (Patient care coordinator)
UCSF, San Francisco, CA
"As a high-volume vasectomy provider, Fellow post-vasectomy testing is the perfect solution for my patients as well as my practice. My patients are now able to complete testing from the privacy of their own home, and Fellow's results delivery has decreased call volume previously required to communicate results."
David Robbins, MD
Urological Consultants of Florida, Miami, FL
"I love the option of Fellow mail-in semen analysis testing for my patients! It’s so convenient. Fellow makes a stressful time less stressful by being able to start a workup from the comfort of your home."
Andrea Palmer, MD
OBGYN at Fenom Women’s Care, Fort Worth, TX
"I am surprised by just how fast results come to the clinic. And patients are very satisfied. Results are very explanatory and very detailed."
Julia (Patient care coordinator)
UCSF, San Francisco, CA
"As a high-volume vasectomy provider, Fellow post-vasectomy testing is the perfect solution for my patients as well as my practice. My patients are now able to complete testing from the privacy of their own home, and Fellow's results delivery has decreased call volume previously required to communicate results."
David Robbins, MD
Urological Consultants of Florida, Miami, FL
"I love the option of Fellow mail-in semen analysis testing for my patients! It’s so convenient. Fellow makes a stressful time less stressful by being able to start a workup from the comfort of your home."
Andrea Palmer, MD
OBGYN at Fenom Women’s Care, Fort Worth, TX
"I am surprised by just how fast results come to the clinic. And patients are very satisfied. Results are very explanatory and very detailed."
Julia (Patient care coordinator)
UCSF, San Francisco, CA
Success Stories
Helping thousands of providers move patient care forward
"As a high-volume vasectomy provider, Fellow post-vasectomy testing is the perfect solution for my patients as well as my practice. My patients are now able to complete testing from the privacy of their own home, and Fellow's results delivery has decreased call volume previously required to communicate results."
David Robbins, MD
Urological Consultants of Florida, Miami, FL
"I love the option of Fellow mail-in semen analysis testing for my patients! It’s so convenient. Fellow makes a stressful time less stressful by being able to start a workup from the comfort of your home."
Andrea Palmer, MD
OBGYN at Fenom Women’s Care, Fort Worth, TX
"I am surprised by just how fast results come to the clinic. And patients are very satisfied. Results are very explanatory and very detailed."
Julia (Patient care coordinator)
UCSF, San Francisco, CA
"As a high-volume vasectomy provider, Fellow post-vasectomy testing is the perfect solution for my patients as well as my practice. My patients are now able to complete testing from the privacy of their own home, and Fellow's results delivery has decreased call volume previously required to communicate results."
David Robbins, MD
Urological Consultants of Florida, Miami, FL
"I love the option of Fellow mail-in semen analysis testing for my patients! It’s so convenient. Fellow makes a stressful time less stressful by being able to start a workup from the comfort of your home."
Andrea Palmer, MD
OBGYN at Fenom Women’s Care, Fort Worth, TX
"I am surprised by just how fast results come to the clinic. And patients are very satisfied. Results are very explanatory and very detailed."
Julia (Patient care coordinator)
UCSF, San Francisco, CA
"As a high-volume vasectomy provider, Fellow post-vasectomy testing is the perfect solution for my patients as well as my practice. My patients are now able to complete testing from the privacy of their own home, and Fellow's results delivery has decreased call volume previously required to communicate results."
David Robbins, MD
Urological Consultants of Florida, Miami, FL
"I love the option of Fellow mail-in semen analysis testing for my patients! It’s so convenient. Fellow makes a stressful time less stressful by being able to start a workup from the comfort of your home."
Andrea Palmer, MD
OBGYN at Fenom Women’s Care, Fort Worth, TX
"I am surprised by just how fast results come to the clinic. And patients are very satisfied. Results are very explanatory and very detailed."
Julia (Patient care coordinator)
UCSF, San Francisco, CA
"As a high-volume vasectomy provider, Fellow post-vasectomy testing is the perfect solution for my patients as well as my practice. My patients are now able to complete testing from the privacy of their own home, and Fellow's results delivery has decreased call volume previously required to communicate results."
David Robbins, MD
Urological Consultants of Florida, Miami, FL
"I love the option of Fellow mail-in semen analysis testing for my patients! It’s so convenient. Fellow makes a stressful time less stressful by being able to start a workup from the comfort of your home."
Andrea Palmer, MD
OBGYN at Fenom Women’s Care, Fort Worth, TX
"I am surprised by just how fast results come to the clinic. And patients are very satisfied. Results are very explanatory and very detailed."
Julia (Patient care coordinator)
UCSF, San Francisco, CA
Enabling breakthroughs in men's health, one sample at a time.
Mail-in semen analysis is just the beginning. Fellow is at the forefront of large-scale research into clinical best practices and factors impacting male reproductive health. We're also pioneering research into how seminal fluid can power the diagnostics of the future.
Samplaski et al. Development and validation of a novel mail-in semen analysis system and the correlation between one hour and delayed semen analysis testing. Fertil Steril. 2021
Gu et al. Postvasectomy Semen Analysis Compliance With Utilization of a Mail-In Semen Analysis Kit. J Urol. 2024
Tolani et al. Mail-in semen analysis breaks down racial, educational, and income barriers to semen analysis completion. Proceedings from the Pacific Coast Reproductive Society (PCRS) Annual Meeting 2024. Indian Wells, CA.
CLIA #05D2177822 | COLA #31245
© 2025 Fellow. All Rights Reserved.
CLIA #05D2177822 | COLA #31245
© 2025 Fellow. All Rights Reserved.
CLIA #05D2177822
COLA #31245
© 2025 Fellow. All Rights Reserved.