The parameters say 3-5% normal is for average bone content for adults. This value is for reference only.

The data and level of your bone mass% are calculated based on the following 3 factors:

1. your own profile (gender, age, and height)

2. the impedance value when the measurement is taken

3. eufy formula

As the personal information (gender, age, and height) and impedance value of different users are different when the measurement is taken, different users will get different readings for their bone mass, the normal range will also change according to the bone mass data.