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Bristle

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Bristle

At-home oral health testing, coaching & care

bristlehealth.com
HQ: San Francisco, CA, USA; Remote
1-10
Healthcare

Company research

Public company, workplace, funding, and market signals

Updated Jul 30, 2026

Overview

Bristle is a San Francisco-based oral health company that provides at-home oral microbiome saliva testing, personalized insights, coaching, and probiotic products to help users identify and address the root causes of oral-health issues.

Primary product

Bristle Oral Microbiome / Oral Health Test

Founded

2020

Headquarters

San Francisco, California, United States

Team size

1-10

Industry

Health, Wellness & Fitness

Sub-industry

Oral health testing / microbiome diagnostics

Offices

San Francisco, California, United States
United States
India

Business model

Direct-to-consumer test kit sales
Provider/practitioner channel test ordering
Supplement/probiotic product sales

Funding

Stage

Seed

Total raised

$3.1M

Latest round

Seed · Jul 2022

Latest amount

$3M

Seed

Jul 2022 · Initialized Capital

$3M

Non-equity assistance

Nov 2021 · GSK NEXT

Pre-seed

Mar 2021 · Y Combinator

$125K

People & investors

Leadership

Danny Grannick

CEO & Co-Founder

David Lin

Co-Founder & CSO

Shivam Patel

Co-Founder

Brian Maurer

Co-Founder

Jonathan Levine, DDS

Advisor

Mark Burhenne, DDS

Advisor

Investors

Anne Wojcicki
GSK NEXT
Initialized Capital
Y Combinator

Work & culture

The company emphasizes prevention, science-backed root-cause oral care, and translating advanced genomics into practical health improvements.

Compensation

Public signals are limited; a historical hiring post referenced competitive salary, stock options, and hybrid work, but no current compensation data was found.

Benefits

HSA/FSA eligibility
Personalized care plans
1:1 coaching from hygienists

Product & market

Pricing

Primarily one-time paid test kits, with add-on probiotic products and practitioner ordering channel distribution.

Differentiators

  • —Claims to be the first at-home oral microbiome saliva test
  • —Analyzes bacteria, fungi, and viruses from a single saliva sample
  • —Uses shotgun metagenomic sequencing
  • —Provides personalized recommendations and care plans
  • —Combines testing with coaching and preventive oral-care guidance

Technology

Shotgun metagenomic sequencing
NGS / next-generation sequencing
Saliva sample analysis
HIPAA-compliant infrastructure

Customers

Consumers
Patients with oral health concerns
Healthcare practitioners
Dental providers

Competitors

Oral Genome
Viome
Dentognostics
Prebiomics
Incisive
CefMed
Pearlii
Dental.com
DentaMitra

Scale & contact

Estimated revenue

Unknown; a third-party estimate cited $8.3M ARR, but this is not publicly confirmed by Bristle.

support@bristlehealth.com

Latest news

Bristle Health and Dentistry.One Partner to Expand Access to Personalized, Preventive Oral Healthcare

PR Newswire / Dentistry.One · Jul 2026

Bristle announced a strategic partnership with Dentistry.One to combine oral microbiome testing with virtual oral-health coaching, teledental consultations, and nationwide care navigation.

Bristle Health and Rupa Health: Unlocking the Oral Microbiome in Root Cause Medicine

Bristle blog · Jul 2024

Bristle announced a partnership with Rupa Health to make its oral microbiome test available to practitioners through the Rupa platform.

How we research our recommendations

Bristle blog · Jul 2024

Bristle explained how it researches and validates the hygiene and lifestyle recommendations it gives to users, and provided a contact email for questions.

Bristle Raises $3M for First At-Home Oral Microbiome Test

Bristle blog · Oct 2022

Bristle announced a $3M seed round led by Initialized Capital with participation from Y Combinator and Anne Wojcicki.

About UsCareersEngineering / science blogGitHubHomeLinkedIn companyOur AboutProvider portal / appTeam / science leadershipX / Twitter
SourcesAbout UsOur AboutBristle Oral Microbiome TestBristle Raises $3M for First At-Home Oral Microbiome TestBristle: At-home oral health testing, coaching & care | Y CombinatorBristle | The OrgBristle Terms of ServiceBristle News - BlogRupa Health partnershipDentistry.One partnership

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