Short survey about tracking blood values

Do you, or have you thought about using blood tests to track values such as hormone, vitamin and iron levels?
Please take 3 min to answer this survey, all responses are anonymous!

Thank you for the replies, have a great week everyone!

You might want to mention the survey is aimed at Norwegian users:

(or alternatively, add Quest Diagnostics and LabCorp, the most popular blood test services in the US).

Anyway, I ran a comprehensive experiment on how ~40 blood biomarkers were affected by a 3-day fasting, which might be interesting.