our peer-reviewed research
We move reproductive health forward by powering novel, large-scale research.
Fellow is more than a partner for clinical semen analysis. We're also at the forefront of large-scale research into best practices, factors impacting male reproductive health, and the future of semen-based diagnostics.
Trusted by over 3,000 urologists and reproductive specialists
Clinical best practices
See how our partners have used Fellow to help drive industry-leading compliance, increase access to testing, and increase clinical efficiency.
WS AUA Abstract
At Home and Mail-In Semen Analysis: A Critical Review of Scientific Validation, Regulatory Oversight, and Marketing Claims
Varela et al.
WS AUA Abstract
Socioeconomic and geographic disparities in semen analysis completion within California
Suarez et al.
ASRM 2025 Abstract
Mail-in Semen Analysis Testing Suggests Need for Earlier and Expanded Access to Fertility Care
Tolani et al.
ASRM 2025 Abstract
Mail-in Semen Analysis Requires Algorithmic Adjustment to Minimize Clinical Misclassification
Campbell et al.
ASRM 2025 Abstract
Breaking Barriers in Fertility Testing: Compliance Trends in Mail-In Semen Analysis Testing Across Florida
Varela et al.
ASRM 2025 Presentation
Challenges Affecting Compliance With Mail-In Post-Vasectomy Semen Analysis in Texas
de Jesus et al.
ASRM 2025 Presentation
Mail-in Semen Cryopreservation Toolkit Mitigates Systemic Barriers for Adolescent and Young Adult Patients
Li et al.
SMSNA 2025 Abstract
Breaking Barriers in Fertility Testing: Compliance Trends in Mail-In Semen Analysis Testing Across Florida
Varela et al.
SMSNA 2025 Abstract
Statewide Analysis of California: Mail-in Semen Analysis Completion Rates Amongst Men
Suarez et al.
SMSNA 2025 Abstract
Urologists in training perceive mail-in semen analysis as enhancing convenience, cost, and experience for patients and physicians.
Suarez et al.
NE AUA Presentation
The Relationship between Age, Ejaculatory Frequency, Waiting Time to Post-Vasectomy Semen Analysis, and Clearance Rate
Matson et al.
NE AUA Presentation
The Impact of “Open” vs. “Closed” Vasectomy Technique on Rates of Azoospermia at First Post-Vasectomy Semen Analysis
Matson et al.
AUA 2025 Abstract
Mail-In Semen Analysis vs Fresh Sample for Post-Vasectomy Semen Analysis (PVSA): Identifying an efficient approach to achieving post-vasectomy clearance
Rotker et al.
AUA 2025 Abstract
Is a Fresh Semen Analysis necessary for a Post Vasectomy Semen Analysis?: Assessment of Stability of Sperm Concentration over a 10-day time frame as a Model for Post Vasectomy Semen Analysis Using the Fellow System
Rotker et al.
WSAUA 2024 Abstract
Mail-in Semen Analysis Test System Significantly Improves Patient and Physician Experiences
Bowman et al.
WSAUA 2025 Abstract
Screening Semen Analysis Demonstrates Significant Need for Reproductive Care
Fernandez et al.
ASRM 2024 Abstract
Mail-In Semen Analysis: A Convenient and Potentially Time Saving Method of Fertility Evaluation
Charles et al.
ASRM 2024 Abstract
Mail-In Semen Analysis Performed Following Vasectomy Reversal Is Associated with Excellent Kit Completion Rates and Turnaround Times Independent of Socioeconomic Barriers
Asanad et al.
ASRM 2024 Abstract
How Patients are Utilizing Mail-In Semen Analysis Testing for Fertility Evaluation; An Assessment of 3,159 Patients Seeking Care Online and Through Urology, REI, Obgyn, and Wellness Practices
Tolani et al.
ASRM 2024 Abstract
Contemporary Characteristics of Men Undergoing Vasectomy Reversal
Asanad et al.
Testing accuracy
Ever since our validation paper was published in Fertility & Sterility in 2021, Fellow has continued to publish research on the accuracy and utility of our post-vasectomy and fertility testing.
WS AUA Abstract
At Home and Mail-In Semen Analysis: A Critical Review of Scientific Validation, Regulatory Oversight, and Marketing Claims
Varela et al.
WS AUA Abstract
Mail-in Semen Analysis Requires Algorithmic Adjustment to Minimize Clinical Misclassification
Campbell et al.
ASRM 2025 Abstract
Mail-in Semen Analysis Requires Algorithmic Adjustment to Minimize Clinical Misclassification
Campbell et al.
ASRM 2025 Presentation
At Home and Mail-In Semen Analysis: A Critical Review of Scientific Validation, Regulatory Oversight, and Marketing Claims
Varela et al.
AUA 2025 Abstract
Mail-In Semen Analysis vs Fresh Sample for Post-Vasectomy Semen Analysis (PVSA): Identifying an efficient approach to achieving post-vasectomy clearance
Rotker et al.
AUA 2025 Abstract
Is a Fresh Semen Analysis necessary for a Post Vasectomy Semen Analysis?: Assessment of Stability of Sperm Concentration over a 10-day time frame as a Model for Post Vasectomy Semen Analysis Using the Fellow System
Rotker et al.
NEAUA 2024 Abstract
Is a Fresh Semen Analysis Necessary for a Post Vasectomy Semen Analysis?
Rotker et al.
ASCO 2023 Abstract
Assessing Mail-In Cryopreservation for Fertility Preservation
Belarmino et al.
Fertility & Sterility
Development and Validation of a Novel Mail-In Semen Analysis System and the Correlation Between One Hour and Delayed Semen Analysis Testing
Samplaski et al.
Compliance and patient experience
In study after study, Fellow has demonstrated that we empower clinics to achieve testing compliance rates 30-50% higher than any previously published research. These gains aren't limited to specific practice types or demographic characteristics, which makes sense: make testing easy, comfortable, and clinically valid, and patients will follow through.
WS AUA Abstract
Socioeconomic and geographic disparities in semen analysis completion within California
Suarez et al.
ASRM 2025 Abstract
Breaking Barriers in Fertility Testing: Compliance Trends in Mail-In Semen Analysis Testing Across Florida
Varela et al.
ASRM 2025 Presentation
Challenges Affecting Compliance With Mail-In Post-Vasectomy Semen Analysis in Texas
de Jesus et al.
ASRM 2025 Presentation
Mail-in Semen Cryopreservation Toolkit Mitigates Systemic Barriers for Adolescent and Young Adult Patients
Li et al.
SMSNA 2025 Abstract
Breaking Barriers in Fertility Testing: Compliance Trends in Mail-In Semen Analysis Testing Across Florida
Varela et al.
SMSNA 2025 Abstract
Statewide Analysis of California: Mail-in Semen Analysis Completion Rates Amongst Men
Suarez et al.
AUA 2025 Abstract
Mail-In Semen Analysis vs Fresh Sample for Post-Vasectomy Semen Analysis (PVSA): Identifying an efficient approach to achieving post-vasectomy clearance
Rotker et al.
WSAUA 2024 Abstract
Mail-in Semen Analysis Test System Significantly Improves Patient and Physician Experiences
Bowman et al.
ASRM 2024 Abstract
Over 90% of Fertility Patients Complete Mail-In Semen Analysis Within 2 Months
Tolani et al.
ASRM 2024 Abstract
Mail-In Semen Analysis Performed Following Vasectomy Reversal Is Associated with Excellent Kit Completion Rates and Turnaround Times Independent of Socioeconomic Barriers
Asanad et al.
Factors impacting reproductive health and fertility treatment
Our lab has processed hundreds of thousands of samples, and the majority of our customers consent to make their de-identified information available for research. This scale allows Fellow and our research partners to better understand factors impacting sperm health and reproductive potential.
WS AUA Abstract
Large-Scale Characterization of Male Orgasmic Dysfunction in Fertility Care: Prevalence and Semen Parameter Associations
Carlisle et al.
WS AUA Abstract
Ejaculatory Dysfunction Categories and Semen Volume: Analysis of 12,235 Men from a Mail-In Fertility Cohort
Carlisle et al.
ASRM 2025 Abstract
Wildfire Smoke Exposure at In Vitro Fertilization Clinics in the Contiguous United States
Lillian et al.
ASRM 2025 Abstract
A Survey of Dietary Patterns and Fast-Food Consumption Among Men Completing Mail-In Semen Analysis at Different Stages of Their Fertility Journey
Panken et al.
SMSNA 2025 Abstract
Ejaculatory Dysfunction Categories and Semen Volume: Analysis of 12,235 Men from a Mail-In Fertility Cohort
Carlisle et al.
SMSNA 2025 Abstract
Enhancing Male Reproductive Health: Effects of Physical Activity on Libido, Sexual Function, and Sperm Counts
Peta et al.
SMSNA 2025 Abstract
Testosterone Use and Semen Quality in a Large Cohort of Men Seeking Fertility Evaluation
Cahill et al.
SMSNA 2025 Abstract
Wildfire smoke exposure among men pursuing mail-in semen analysis testing in the contiguous United States
Maloney et al.
SMSNA 2025 Presentation
Large-Scale Characterization of Male Orgasmic Dysfunction in Fertility Care: Prevalence and Semen Parameter Associations
Carlisle et al.
AUA 2025 Abstract
Mapping of Germ Cell Development and Pluripotency in Cryptorchidism
Suarez et al.
Prostate cancer detection in semen
We believe that seminal fluid holds untapped diagnostic power. Today, we are focusing on prostate cancer detection, with an eye toward developing the post-PSA reflex test of the future. Having shown that mail-in semen analysis can transform traditional fertility assessment and post-vasectomy testing, we believe that future tests can help improve prostate cancer outcomes and avoid unnecessary biopsies.
WS AUA Presentation
Development of a novel RNA biomarker for prostate cancer detection using seminal fluid: results from a large multicenter clinical study
Shee et al.
AUA 2025 Abstract
Detection of clinically significant prostate cancer in seminal fluid using RNA biomarkers: Results from a large multi-center clinical study
Thoreson et al.
AUA 2025 Abstract
A novel DNA methylation-based approach to detect clinically significant prostate cancer in a large multicenter clinical study
Nguyen et al.
PLOS One Publication
Tissue of Origin Characterization of Cell Free DNA in Seminal Plasma: Implications for New Liquid Biopsies
Huang et al.
Work With Us
Working with Fellow is simple
and convenient
We offer urologists, fertility specialists, and OBGYNs around the country a variety of options to make our tests accessible to your patients. Request more information to hear from one of our local representatives, or write us directly at sales@meetfellow.com.
