What Causes A Drop In TSH Levels?

Posted on Wed, 21 Sep 2016

Medically reviewed by Ask A Doctor - 24x7 Medical Review Team

Tue, 20 Sep 2016 Answered on

Wed, 12 Oct 2016 Last reviewed on

Question : my wife have 0.001 TSH, We have checked Free T3 and Free T4. both are normal. what could be the reason

Answered by Dr. Deepti Verma (-5 hours later)

Brief Answer:
Provide more details and upload reports

Detailed Answer:
Hello,
I have gone through your question and understand your concerns.

Low TSH with normal T3 and T4 may be found in subclinical hyperthyroidism, pregnancy and medications.

you should repeat the test after 2-4 weeks.
Any pregnancy, headache, visual loss, neck swelling?
You can upload reports too.
Hope you found the answer helpful.

Regards
Dr Deepti Verma

Above answer was peer-reviewed by : Dr. Arnab Banerjee

Follow up: Dr. Deepti Verma (13 minutes later)

we did pregnancy test, it was negative. also got periods on 45th day. apart from this she used to get almost regular periods. 28, 34 days cycle pattern alternatively.

Answered by Dr. Deepti Verma (6 hours later)

Brief Answer:
Get examined and evaluated by an endocrinologist

Detailed Answer:
Hello,
Periods abnormalities may be due to thyroid disorder.
You need to visit an endocrinologist for examination and evaluation.
Neck USG for evaluating thyroid gland may be required.
Other hormonal tests like FSH, LH may be required for menstrual abnormalities.
Regards
Dr XXXXXXX Verma

Above answer was peer-reviewed by : Dr. Yogesh D