Hi, folks, I was diagnosed with hypothyroidism, and have been on L T4 treatment for 6 weeks, 3 weeks of 25 mcg, and now I take 50 mcg T4 per day.

I had the blood work a few days ago, and found RT3 is low, What does it mean? Low RT3 with high iPTH, Does it mean I have hyperparathyroidism? Following is the results

iPTH 71.80 pg/ml (14-72)
FT3 4.42 pmol/L (2.5-6.5)
FT4 17.48 pmol/L (11.5-23.2)
TSH 6.02 mIU/l (0.35-5.5)
rT3 0.12 ng/ML (0.2-0.64)
Ferritin 34.2 (6-159),
VB12 245 (156-672)
folic acid (folate) >24 (3.2-6.4)--- too high
CO2 21.20 (22-31)--- low
8AM, blood Cortisol 607.82 ( 118.6-618)
4PM, Cortisol115.03 (85.3-459.6)
00PM, Cortisol 104.27 (no reference values yet!)
E2 estrogen 22.33 (11-165)
progesterone 1.08 (0.15-1.4)
testosterone 33.10 (14-76)

And is there anything wrong with my sex hormone levels and Cortisol levels?

It is pretty weird your TSH is so high given how high your FT3 and FT4 are. You might have something going on with your pituitary. I don't really know how to explain that.

RT3 is apparently a place holder. It can bind to a T3 recepter and busy it out, without producing any results. Having too much rT3 would mean you probably feel hypo. Having too little... hmmm.... not really sure. I read something that said it might be related to parathyroid. And looking at your pth levels they're looking at the high end of things.

You should probably do some research online of those and talk to your doctor and try to get a referral to an endo.

Thanks, NancyL

For the pituitary suspect, I have my ACTH tested, and found it is normal.

Actually, TSH is secreted from the pituitary and if there's something wrong with the pituitary it can give some funky results. I don't think the ACTH would tell you that, it seems to be a cortisol check.

Here's something about that test: http://labtestsonline.org/understan.../acth/test.html

Hi, I have cortisol checked,

8AM, blood Cortisol 607.82 ( 118.6-618)
4PM, Cortisol115.03 (85.3-459.6)
00PM, Cortisol 104.27 (no reference values yet!)

Joyhypo
Your ferritin is too low. It needs to be between 70-90 for your body to function best.