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Pediatrics Community
This patient support community is for discussions relating to allergies, behavior, developmental disorders, immunizations and vaccines, puberty, and any other pediatric health issues including brain, bone, heart, lungs, gastrointestinal and urological in adolescents, infants, newborns, and toddlers.
Normal free T4?
by Nicholasmom, Apr 28, 2008 09:38PM
What is the normal free T4 range for a 12 month old male? We used 2 different labs recently and one had .5 as the low end of normal and the other said .9. Why the 2 different numbers? Is it necessary to treat as secondary hypothyroidism with free T4 of .5 and TSH at 3.97? What are the mental implications of an infant with low free T4 if it infact was considered low. Also looking back at decline in growth rate (length) and clinical signs of gross motor delay, it seems both issues began as I returned to work and stopped breast feeding and switched to formula at about 10 moths of age. Is this a coincidence?
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