Neonatal thyroid function test

Neonatal thyroid function tests are one of the important tests in neonatal examinations. It is important to understand the function of the baby's thyroid gland and prepare for the timely understanding of the baby's normal development. People who need to be examined: Newborns and infants have symptoms such as flustered irritability, irritability, hand tremors, fear of heat and weight loss, and some people are accompanied by exophthalmos and thickened neck. Basic Information Specialist classification: maternity check check classification: blood test Applicable gender: whether men and women apply fasting: fasting Tips: Actively cooperate with the doctor's work. Normal value Thyroid stimulating hormone releasing hormone (TRH) is normally 14 to 168 pmol/L. The free thyroxine index (T4) is normal from 2.2 to 14.0. Thyroid-stimulating hormone (TSH) is normal in cord blood 3 to 12 mU/L, and children are 0.9 to 8.1 mU/L. Free tri-iodothyronine (FT3) is normally 6.0 to 11.4 pmol/L. The anti-triiodothyronine (anti-T3) is normally 0.2 to 0.8 nmol/L. Triiodothyronine (T3RU) is normally 0.98 to 1.00. The total amount of thyroxine (TT4) is 130-273 nmol/L in neonates and 91-195 nmol/L in infants. Free thyroxine (FT4) is normally 26 to 39 pmol/L. The total amount of tri-iodothyronine (TT3) is 0.5-1.1 nmol/L in cord blood and 1.4-2.6 nmol/L in neonates. Clinical significance Abnormal result Thyroid stimulating hormone releasing hormone (TRH) increases plateau hypothyroidism and secondary (pituitary) hypothyroidism. Reduce hyperthyroidism, third sex (hypothalamic) hypothyroidism. Free thyroxine index (T4) increased hyperthyroidism, application of thyroid hormone or heparin. Reduce hypothyroidism. Thyroid stimulating hormone (TSH) increases platelet hypothyroidism, ectopic TSH secretion syndrome (ectopic TSH tumor), pituitary TSH tumor, subacute thyroiditis recovery period. Reduced secondary hypothyroidism, third (hypothalamic) hypothyroidism, except for hyperthyroidism CTSH tumors, EDTA anticoagulant measured low. Free tri-iodothyronine (FT3) increases hyperthyroidism. Reduce hypothyroidism. Anti-triiodothyronine (anti-T3) increases various stress states, hunger, fasting, various acute diseases, liver damage, obesity, weight loss, and advanced age. Triiodothyronine (T3RU) increases hypothyroidism. Reduce hyperthyroidism. Total thyroxine (TT4) increases hyperthyroidism, high TBG (pregnancy, oral estrogen and oral contraceptives, familial), acute thyroiditis, subacute thyroiditis, acute hepatitis, obesity, eating with thyroid hormones, eating Thyroid tissue rich in thyroid hormones, etc. Reduce hypothyroidism, low TBG (nephropathy syndrome, chronic liver disease, protein-losing enteropathy, hereditary low-TBG, etc.), total pituitary dysfunction, hypothalamic lesions, strenuous activity, etc. Free thyroxine (FT4) increases hyperthyroidism when treated with thyroxine. Reduce hypothyroidism when using T3 treatment. The total amount of tri-iodothyronine (TT3) increased hyperthyroidism, high TBG, iatrogenic hyperthyroidism, hyperthyroidism and TT3 in the early stage of hypothyroidism, and TT4 in patients with iodine deficiency goiter decreased. However, TT3 is normal and is also relatively elevated. Reduce hypothyroidism, low T3 syndrome (discovered in various serious infections, chronic heart, kidney, liver, lung failure, chronic wasting disease, etc.), low TBG and so on. People who need to be examined: Newborns and infants have symptoms such as flustered irritability, irritability, hand tremors, fear of heat and weight loss, and some people are accompanied by exophthalmos and thickened neck. Precautions Taboo before the examination: poor rest, improper diet, excessive fatigue. Requirements for inspection: Actively cooperate with the doctor's work. Inspection process A certain amount of blood is taken from the newborn, and after treatment, the content of each item is detected to determine the symptoms. Not suitable for the crowd Special diseases: Patients with hematopoietic dysfunction, such as leukemia, various anemia, myelodysplastic syndrome, etc., unless the examination is essential, try to draw less blood. Adverse reactions and risks 1, subcutaneous hemorrhage: due to pressing time less than 5 minutes or blood draw technology is not enough, etc. can cause subcutaneous bleeding. 2, discomfort: the puncture site may appear pain, swelling, tenderness, subcutaneous ecchymosis visible to the naked eye. 3, dizzy or fainting: in the blood draw, due to emotional overstress, fear, reflex caused by vagus nerve excitement, blood pressure decreased, etc. caused by insufficient blood supply to the brain caused by fainting or dizziness. 4. Risk of infection: If you use an unclean needle, you may be at risk of infection.

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