# CDC Hepatitis B Surveillance Guidance

Explains HBV laboratory markers, including detectable DNA below the lower limit of quantification.

- Original URL: https://www.cdc.gov/hepatitis/php/surveillance-guidance/hepatitis-b.html
- Organization: Centers for Disease Control and Prevention
- Country or region: United States
- Language: en
- Source type: guideline
- Published: 
- Source updated: 
- Last checked: 2026-10-14
- Credibility note: US national public-health agency; laboratory interpretation guidance

## Related Articles

- [HBV DNA is undetectable: why do I still need hepatitis B medicine?](https://openhbv.com/articles/hbv-dna-undetectable-continue-treatment-en.md?locale=en) — Understand why undetectable HBV DNA does not automatically mean treatment can stop, and what to ask your doctor.

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