TSH & fT4 levels

We are adopting an infant (now 3-1/2 months) from Vietnam and received the second test results for TSH & fT4 this evening.  The first test results showed possible secondary hypothyroidism.

First results:  fT4 was 7.51 pmol/L (7.4-14.4) and the TSH was 0.05uUl/mL (0.5-7.6)

Second results (one month later):  fT4 was 13.2 (3.8 - 77.2 pmol/L) and the TSH was 4.3 (normal range 0.4 - 4.0 m/UL)

The T3 is now 3.2 (range 1.2 - 2.7 nmol/L)

Our Pediatrician (who is the only one handling Int'l Adoptions in the office) is out until next week.

Thank you so much for interpeting these results for us.

Best Regards,
Carol

[stella5349]

Secondary to what?

I see subclinical hypothyroidism on your lab references which are not AACE. .3-3.0 is correct ranges so primary hypothyrodism seems to be logical.

At one time the test had shown (0.05) hyperthyroid. Was a TPO antibody done ? I ask b/c one month later hypo blood tests are shown.

Antibodies killing off thyroid tissue?

That then would give the secondary Dx you are saying.

I do know - other members here will had on - watch this post.

Good Luck

[CMPA]

Thank you for your quick response.

The report shows Secondary Hypo T....Low FT4 and Low to Normal TSH.

I am not sure what a TPO antibody is.....do not see anything close to this on the report.

The doctor suggested we ask for a cortisol test but, unfortunately, we are told that they are unable to do this test.

Thanks!