One cheek swab. Results for life.
Every Marrow genetic report — from Gut Health to Peptide Response — is unlocked by the same simple at-home saliva test. Here's exactly how it works.
The process
- 01
Your DNA kit arrives
Order any Marrow genetic report and we ship a saliva collection kit — one tube, one funnel, one prepaid return mailer. No blood, no fasting, no clinic visit.
- 02
Spit and seal
Fill the tube with saliva to the fill line (about 2 minutes), snap the funnel to release the stabilizing buffer, and cap it. Your DNA stays stable at room temperature for weeks.
- 03
Mail it back
Drop the prepaid mailer with your carrier. Your sample is genotyped at Gene by Gene — a CLIA-certified, CAP-accredited genomics laboratory in Houston, Texas.
- 04
Your personalized reports
In 3–4 weeks your interactive reports land in your Marrow dashboard — your genotype, your result tier, and specific recommendations you can act on with your clinician.

Why Marrow
CLIA & CAP-accredited lab
Every sample is processed by Gene by Gene — CLIA-certified, CAP, AABB, and COLA accredited.
Condition-specific packages, one swab
Your DNA doesn't change. One saliva sample powers whichever condition-specific genetic package you order — now or years from now.
Your data, yours forever
Download raw genotype data anytime. HIPAA-compliant, encrypted, and never sold.
