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Congenital hypothyroidism
My baby was identified as having congenital hypothyroidism on the 22 day of birth and from then he is on treatment..he is taking 25 mcg daily..After one month of treatment his tsh was 0.79 and T4 was 1.79 and now after 1.5 months of treatment tsh is 0.61 and T4 is 1.22. I want to understand why his T4 has reduced even though his tsh is also steadily decreasing...is this normal ...can someone please help me?
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Normally T4 should increase after 2 to 4 weeks of thyroid hormone therapy to 9 to 12 mcg/dl
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Exceptions could be preterm babies whose hormone axis is immature;
If there are hemangiomas of liver, they may secrete enzymes that deactivate thyroid hormone in which case higher hormone dosage may be required
Also iron and calcium supplements can interfere with absorption of the hormone
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Your baby’s current TSH (0.61) and T4 (1.22) levels are within the normal range for infants on treatment. The slight T4 dip while TSH decreases is likely due to:
- Dose adjustmentsas the body adapts to medication.
- Timing of blood tests (ensure tests are done before the daily dose for accuracy).
This pattern is not unusual during early treatment. Regular monitoring is key.
Feel free to schedule a consultation for personalized guidance.
Warm regards,
Dr. Chahat Saxena
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Dr. Bhatt Vivek Prafulchandra
Pediatrician
5 yrs exp
Rajkot
Consult with Pediatrician physically for further evaluation and treatment
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Disclaimer : The content is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding your medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read on this website.