persistant low tsh

[FallenAngel]

any advice pls ... fsh 1.6 tsh 0.01 free t4 21.5 free t3 5.1 prolactin 1 oestradiol 44 serum cortisol 55 morning ..had an mri for pituitary no results back yet ..why is my tsh always low?

[Clutter]

Why are you worried, FallenAngel? Your FT4 and FT3 are lush according to most ranges I've seen. I think long term Levothyroxine use can alter your 'natural' TSH. The HPA set point alters in thyCa patients on suppressive therapy and doesn't always recover in hyperthyroid patients who become hypothyroid.

[Hidden in reply to Clutter]

healthunlocked.com/thyroidu.....

[Clutter in reply to Hidden]

Thanks Lily. I'd forgotten FA wasn't used to seeing her results.

FA, TSH 0.01 is low/suppressed but isn't anything to be worried about. If you have pituitarity issues these will affect TSH but as I mentioned above, long term Levothyroxine can also cause low TSH. FT4 and FT3 are what matters and yours look good

[Hidden]

Yes, your thyroid results don't look too bad, so it's possible something else is going on as I know you said you feel awful. I guess the MRI result will help to eliminate one possibility (or not, as the case may be). Ever had B12 checked?

[FallenAngel]

never had my b12 checked ... so my results are not that bad? thanks for the replies btw