I cant seem to find much discussion regarding how accurate they are.
What are they best for testing and what companies charge the best rates as I am paying cash?
Good for tracking average of hormones not monitoring the fluctation. if you are high low high low then you measure normal but inreality there are imbalances that are hidden. Why salvia is better for cortisol ONLY, blood test for others
Would cortisol be also included since there is such a fluctation during the day?