Re: formula for thyroid bloodwork?
FT4 1.0 Range (0.8-1.8)
Percentage calculation: [Your value - lower range limit]/[upper range limit - lower range limit]*100 = %
[1.0-.8]/[1.8-.8]*100 = 20%
FT3 is done the same way: 260 (230 - 4 2 0)
[260-230]/[420-230]*100 = 15.79%
Other thing to note is balance. If your Fts are not with in 10 % of each other then something is off in you conversion process, adrenal T3 conversion suppression, or pituitary request for T4 to t3 conversion and further testing is necessary.
Good luck. Keep a flow chart of your labs and a daily symptom log with heart rate, BP, and temperature values. This can help more than you know when trying to track down rhythms of thyroid flux.
If we learn by our mistakes, I am working on one hell of an education.
Last edited by mkgbrook; 04-11-2008 at 09:14 AM.