Fellow provides peer-reviewed, mail-in semen analysis for clinics looking for improved compliance and a patient-friendly solution to fertility testing.
Fellow's CLIA-certified diagnostics lab combines the ease of a mail-in semen analysis with peer-reviewed clinical performance to provide clinically valid results§in less than two business days from when a specimen reaches our laboratory.
Get in touchWe dramatically improve the testing experience for patients and clinic staff members, achieving compliance rates of up to 97%‡ (compared to an established average of about 50% for in-office testing*) while providing results that are clinically validated to be as accurate as those from a fresh semen sample analyzed within 1 hour.
Success Stories
Fellow is building a biobank of semen samples so that the most potent and accessible analyte—seminal fluid—can be used to yield breakthroughs across medical disciplines.
Our science§ 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;115(4):922-929
† 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.
‡ Gu et al. High compliance with Fellow semen analysis testing across the United States irrespective of clinical practice type. Proceedings from the American Urological Association Annual Meeting 2024. San Antonio, TX.
* Multiple publications report only 1 in 2 patients complete post-vasectomy semen analysis, including [1] Bradshaw et al., Urology, 2019, [2] Duplisea and Whelan, Journal of Urology, 2013 and [3] Johnson (Siegert) et al., Andrology & Gynecology: Current Research, 2019.