Labels:text | screenshot | black | black and white | font OCR: Low T4 levels at this stage will also reve T4 levels secondary hypothyroidism, but false low misleadingmay be found in premature infants, and thyroids. normal T4 levels may occur with ectopic sing dried Most screening is currently carried out u f TSH. blood spots on filter paper and an assay nenced as Replacement T4 therapy should be com soon as high TSH levels are detected.
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