# When Is ST2 Tested?

The ST2 test is done for follow-up and prognosis after a heart failure diagnosis, to see the response to treatment, and when NT-proBNP is equivocal.

*2025-04-04*

- For follow-up and prognosis assessment after a heart failure diagnosis
- To understand whether the patient is responding to treatment
- Especially if NT-proBNP levels are equivocal or there are other risk factors