% through the range

[AustinHealeySprite]

could someone please show me how to work out % through the range in blood tests

Thanks

Old age doesn’t help

[greygoose]

Here is a handy little gadget that will do it for you:

thyroid.dopiaza.org/

[helvella Administrator Thyroid UK]

Two different calculators are shown in the Pinned Posts:

healthunlocked.com/thyroidu...

[RoseStar in reply to helvella]

What are the optimal ranges for T3 and T4 please?

[helvella Administrator Thyroid UK in reply to RoseStar]

There really are no "optimal ranges".

Ranges vary by lab.

And it is important to view test results together, and in context, and not isolated.

Having said that, few report feeling well with an FT4 below halfway when not treated, or when taking only levothyroxine.

I suggest you have a look at the reply you got on one of your posts: healthunlocked.com/thyroidu...