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A testosterone blood test may be done if a child seems to be entering puberty earlier or later than expected, or to check for damage or disease of the testes or ovaries, adrenal glands, or pituitary glands.
The thyroid peroxidase antibodies test can help doctors diagnose and monitor autoimmune conditions involving the thyroid gland, including Hashimoto's thyroiditis and Graves disease.
Doctors may order this test if they suspect high levels of uric acid in the bloodstream. Some kids with leukemia or other types of cancer can have high levels of uric acid (hyperuricemia).
Doctors may order a blood test for valproic acid, an anticonvulsant drug prescribed mainly to prevent seizures, to see how the liver is processing the medicine.
