Rao Posted June 23, 2023 Share Posted June 23, 2023 Our hospital lab has adopted TSH reflex testing in which if TSH is in acceptable range no further testing will be done. Wanted to hear thoughts from esteemed informed colleagues In pitfalls of such approach. thank you Link to comment Share on other sites More sharing options...
Stefan Johansson Posted June 24, 2023 Share Posted June 24, 2023 Hi @Rao , do you mean as a test for congenital hypothyroidism? Link to comment Share on other sites More sharing options...
Rao Posted June 25, 2023 Author Share Posted June 25, 2023 as a test to r/o hypothyroid ( in premature infants or in term infants in the first many days of life). Reflex TSH testing appears becoming the standard order for testing Thyroid status in infants beyond neonatal period to adulthood 3 minutes ago, Rao said: LaFranchi SH (2021) Thyroid Function in Preterm/Low Birth Weight Infants:Impact on Diagnosis and Management of Thyroid Dysfunction.Front. Endocrinol. 12:666207. doi: 10.3389/fendo.2021.666207 trying to see If the test- Reflex T4 adequately addresses the issue based on this 1 Link to comment Share on other sites More sharing options...
Abdul kasim jaleel ahmed Posted June 30, 2023 Share Posted June 30, 2023 On 6/25/2023 at 6:37 AM, Rao said: as a test to r/o hypothyroid ( in premature infants or in term infants in the first many days of life). Reflex TSH testing appears becoming the standard order for testing Thyroid status in infants beyond neonatal period to adulthood trying to see If the test- Reflex T4 adequately addresses the issue based on this why the term reflex mentioned instead screening- please clarify Link to comment Share on other sites More sharing options...
manuel perez valdez Posted July 16, 2023 Share Posted July 16, 2023 Hi. The determination of FT4 in very premature and extremely premature newborns is standard care in national neonatal units and worldwide, however there is controversy about what levels are considered normal in this group of newborns. Thyroid function may be affected in newborns with hyaline membrane disease or respiratory distress and are associated with euthyroid sick syndrome. Newborns ≤ 32 weeks or very low weight <1,500g are a group of patients at risk of presenting thyroid dysfunction. Normal TSH concentrations in the screening test during the first days of life in premature infants do not rule out the presence of CH. Given the risk of false negatives in CH screening and the probability of thyroid dysfunction, it is suggested to repeat the analytical determination at 2 weeks of life, 4 weeks, when it reaches 1,500 g or at discharge. https://www.analesdepediatria.org/index.php?p=revista&tipo=pdf-simple&pii=S1695403321001727 https://www.scielo.cl/pdf/rcp/v89n2/0370-4106-rcp-89-02-00202.pdf Link to comment Share on other sites More sharing options...
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