To determine the stage of transthyretin (TTR) amyloidosis, specific biomarkers are used. According to my knowledge base:

- Stage 1: Normal levels of both NT-proBNP (less than 3,000 nanograms per liter) and eGFR (more than 45 milliliters per minute)
- Stage 2: Abnormal levels of either NT-proBNP or eGFR.
- Stage 3: Show Full Answer

To determine the stage of transthyretin (TTR) amyloidosis, specific biomarkers are used. According to my knowledge base:

- Stage 1: Normal levels of both NT-proBNP (less than 3,000 nanograms per liter) and eGFR (more than 45 milliliters per minute).
- Stage 2: Abnormal levels of either NT-proBNP or eGFR.
- Stage 3: Abnormal levels of both NT-proBNP and eGFR.

For more detailed information, you can refer to the resource: [Stages of Amyloidosis](https://www.myamyloidosisteam.com/resources/sta...).

 This AI-generated response comes from MyAmyloidosisTeam and other selected sources. It is not a substitute for medical advice. Always ask your doctor about specific health concerns.

Stages of Amyloidosis | MyAmyloidosisTeam

Staging and Progression of AL Amyloidosis | MyAmyloidosisTeam