Fellow Health
Fellow Health is a San Francisco-based, CLIA-certified diagnostics company offering mail-in clinical-grade semen analysis and cryopreservation kits to patients, distributed primarily through 3,000+ fertility and urology practices across the United States.
- Company typePrivate
- Founded2018
- HeadquartersSan Francisco, United States
- Headcount51–100
- GTM typeB2B and B2C
- OfferingServices
What Fellow Health does
Fellow Health, Inc. (doing business as Fellow) operates a mail-in, clinical-grade andrology diagnostics platform headquartered in San Francisco, California, with laboratory operations referenced in San Leandro, California. The company's core offering is an at-home semen analysis kit that patients collect and ship to Fellow's CLIA-certified, COLA-accredited lab (CLIA #05D2177822; COLA #31245), where samples are processed using a proprietary algorithm that converts structured semen data into clinic-equivalent reports delivered in under two business days. Fellow has expanded its product line to include a dedicated post-vasectomy confirmation test and a semen analysis bundled with cryopreservation and tissue bank storage, supported by a tissue bank license and a newly obtained New York State high-complexity clinical laboratory permit (October 2025).
The company serves both consumers directly and, primarily, clinicians through a B2B2C distribution model, reporting embedding in 3,000+ fertility and urology practices and processing 400+ patient samples per day, with 200,000+ cumulative reports delivered. Revenue mechanics combine direct-to-consumer kit sales (typical mail-in andrology pricing in the low-hundreds range, higher for cryopreservation bundles) with clinic-channel prescription volume. Stripe is integrated for payment processing across both channels. Clinical credibility is supported by peer-reviewed validation in Fertility and Sterility (Samplaski et al., 2021) and reported operational metrics including 93% patient satisfaction and 86% post-vasectomy testing compliance.
Fellow has raised approximately $48M in total funding, most recently a $24M Series B in July 2025 led by 5AM Ventures with participation from The Forest Road Company; earlier capital came from 5AM Ventures, Genoa Ventures, Human Capital, LabCorp Venture Fund, and MANTIS Venture Capital. Leadership includes CEO Brian Hogan and independent Chairman Paul Kappelman, former CEO of Ovation Fertility. The Series B is explicitly aimed at scaling commercial reach and reaching profitability by 2026, with management targeting 40%+ growth in the fertility segment. Certain kit offerings remain unavailable in Hawaii, Alaska, and previously in New York, though the latter restriction has been addressed by the recent high-complexity permit.
Fellow Health firmographics
Firmographics- Name
- Fellow Health
- Legal name
- Fellow Health, Inc.
- Website
- https://meetfellow.com
- Company type
- Private
- Founded year
- 2018
- Operating status
- Operating
- Headcount range
- 51–100 employees
- Short description
- Fellow Health is a San Francisco-based, CLIA-certified diagnostics company offering mail-in clinical-grade semen analysis and cryopreservation kits to patients, distributed primarily through 3,000+ fertility and urology practices across the United States.
- Ownership category
- akta.pro rank
Fellow Health industry classification
Industry- Product category
- Clinical Fertility Diagnostics
- NAICS
- Medical Laboratories (621511), Medical and Diagnostic Laboratories (62151), Medical and Diagnostic Laboratories (6215)
- SIC
- Services-Medical Laboratories (8071), In Vitro & In Vivo Diagnostic Substances (2835)
- akta.pro primary industry
- Home-Use & OTC Rapid Self-Tests (Consumer POCT kits) (HLAHAOAK)
- akta.pro secondary industries
- Remote Diagnostics & Home Testing Devices (Connected POC/At-Home Diagnostic Readers) (HLAHACAL), Point-of-Care & Decentralized Trial Testing Services (HLAGAEAK), Home Diagnostic & Self-Test OTC Kits (HLAIADAO)
Keywords
Where Fellow Health is headquartered
LocationHeadquarters
- HQ city
- San Francisco
- HQ country
- United States
- HQ region
- North America
Markets served
Fellow Health business model
Business model- GTM type
- B2B and B2C
- Offering type
- Services
- Cost components
- Personnel, Operations, Technology or R&D, Marketing or Sales, Supply Chain
Fellow Health product offering
Product offeringCore offering
Fellow Health operates a CLIA-certified, COLA-accredited clinical diagnostics laboratory that provides peer-reviewed, mail-in semen analysis, post-vasectomy testing, and sperm cryopreservation services to patients at home and to urology, fertility, and OB/GYN clinical practices. Consumers purchase test kits directly through the Fellow website; samples are mailed to the Fellow lab where a proprietary algorithm processes structured specimen data and returns clinic-equivalent results in less than 2 business days.
Differentiator
Problem solved
Functional benefit
Products and services
- Vasectomy Test Mail-in post-vasectomy semen analysis test kit that allows vasectomy patients to confirm procedural success from home; results are returned to the ordering clinic in less than 2 business days from sample receipt and is associated with an 86% compliance rate versus typical in-clinic post-vasectomy testing.
- Semen Analysis Mail-in, peer-reviewed clinical semen analysis test kit for men evaluating fertility; sample is collected at home, mailed to Fellow's CLIA-certified lab, and processed with a proprietary algorithm to produce clinic-equivalent metrics (count, motility, progressive motility, morphology, volume) returned in less than 2 business days.
- Semen Analysis + Cryopreservation Combined mail-in semen analysis and elective sperm cryopreservation offering that lets men complete a full fertility analysis and store their sperm for future fertility treatments with a partner, under Fellow's tissue bank license.
Companies that use Fellow Health
Customer profileIdeal customer profiles2 records
Fellow Health technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Integration1 record
AI capability1 record
Fellow Health partnerships and signals
Strategic signalPartnerships
Two partnerships are on record, tiered core and minor.
- StripecoreStripe serves as Fellow Health's payment processing vendor, enabling secure online transactions for consumer test kit purchases (semen analysis, vasectomy test, and cryopreservation subscriptions) directly on the Fellow website.
- Morgan Stanley Capital PartnersminorMorgan Stanley Capital Partners is connected to Fellow Health through Paul Kappelman, who serves as Senior Independent Operating Advisor to the company.
Recent moves7 records
Expansion highlights5 records
Fellow Health competitors and assessment
Company assessmentBroad incumbents
- Quest Diagnostics: Quest Diagnostics is the other major U.S. clinical reference laboratory offering reproductive/fertility testing. It is a broad incumbent with nationwide logistics infrastructure that could plausibly add a mail-in male-fertility product.
- Labcorp: Labcorp is one of the largest U.S. clinical laboratory networks with established andrology/fertility testing services and even participated in a prior Fellow financing round. It is a broad incumbent with overlapping diagnostic capabilities and significantly greater scale.
Direct peers
- Dadi: Dadi offers at-home male fertility testing and sperm storage via mail-in kits. It is the most directly comparable consumer-facing male-fertility mail-in competitor, with overlapping products (semen analysis + cryopreservation) and a similar DTC distribution model.
- Legacy: Legacy provides at-home sperm testing and cryopreservation with mail-in kits. It directly competes for the same male-fertility consumer and offers overlapping cryopreservation/storage subscriptions that rival Fellow's storage product.
- YO Home Sperm Test (Medical Electronic Systems): YO sells FDA-cleared smartphone-based at-home sperm analysis kits. It competes in the same consumer male-fertility self-test category as Fellow, though via a connected device rather than a mail-in lab workflow.
- Trak (Sandstone Diagnostics): Trak is an at-home male-fertility testing product with a mail-in lab component for confirmatory analysis. It targets the same male-factor infertility and post-vasectomy testing use cases that Fellow serves.
Emerging players
- Ro: Ro operates a direct-to-patient men's health and fertility platform (Ro Fertility) offering at-home semen analysis and treatment. It competes for the same male-fertility consumer with deeper digital-marketing reach and a broader men's health portfolio.
- Progyny: Progyny is a leading employer-sponsored fertility benefits platform. It is comparable as a channel/buyer for Fellow's employer-sponsored fertility expansion strategy and shapes covered-product design for male-fertility testing.
- Carrot Fertility: Carrot is a fast-growing fertility and family-forming benefits platform serving employers. It is comparable as a distribution channel for Fellow's employer-sponsored fertility push and could integrate mail-in male-fertility testing into its covered services.
Regional players
- Ovation Fertility: Ovation Fertility is one of the largest U.S. fertility-clinic networks, with whom Fellow's new Independent Chairman Paul Kappelman was previously CEO. It is a regional/network player in reproductive medicine that interfaces with mail-in labs like Fellow for diagnostic referrals.
Market position
Strengths5 records
Weaknesses4 records
Competitive moat5 records
Key risks6 records
Key highlights7 records
Customer concentration
Fellow Health social profiles
Digital presenceFellow Health financial estimates
Financial estimateRevenue estimate
Valuation estimate
Fellow Health leadership team
Management profileNumber of profiles
Profiles2 records
Fellow Health funding detail
Funding detailFunding overview
Funding rounds2 records
Investors7 records
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Fellow Health M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Fellow Health
What does Fellow Health do?
Fellow Health operates a CLIA-certified, COLA-accredited clinical diagnostics laboratory that provides peer-reviewed, mail-in semen analysis, post-vasectomy testing, and sperm cryopreservation services to patients at home and to urology, fertility, and OB/GYN clinical practices. Consumers purchase test kits directly through the Fellow website; samples are mailed to the Fellow lab where a proprietary algorithm processes structured specimen data and returns clinic-equivalent results in less than 2 business days.
Is Fellow Health a public or private company?
Fellow Health is a private company. It is classified as venture growth investor backed and is currently operating.
When was Fellow Health founded?
Fellow Health was founded in 2018. It employs 51 to 100 people.
Where is Fellow Health based?
Fellow Health is headquartered in San Francisco, United States, in the North America region.
Who are Fellow Health's main competitors?
Broad incumbents on record are Quest Diagnostics and Labcorp. Direct peers are Dadi, Legacy, YO Home Sperm Test (Medical Electronic Systems) and Trak (Sandstone Diagnostics). Emerging players are Ro, Progyny and Carrot Fertility. Ovation Fertility is listed as a regional player.
Does Fellow Health have an API?
No public API is recorded for Fellow Health.
What industry is Fellow Health in?
Fellow Health's product category is Clinical Fertility Diagnostics. Its primary akta.pro industry code is HLAHAOAK, Home-Use & OTC Rapid Self-Tests (Consumer POCT kits), with a secondary code of HLAHACAL, Remote Diagnostics & Home Testing Devices (Connected POC/At-Home Diagnostic Readers). Its NAICS code is 621511 and its SIC code is 8071.