How much does formaldehyde exceed the standard to have an impact on pregnant women?

Patient's question:

No

Doctor's answer:

The issue with formaldehyde is its long volatile period, with a release cycle lasting up to 3-15 years. Formaldehyde is hidden in various types of furniture and decorative materials, only releasing into indoor air under certain temperature and humidity conditions. During heating season and early spring, indoor spaces are typically fully sealed, with poor air circulation, leading to increasingly high concentrations of formaldehyde indoors.