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Estradiol is the most important form of the hormone estrogen. Doctors may order an estradiol test if puberty seems to be starting earlier or later than expected, or to evaluate menstrual problems.
Follicle stimulating hormone (FSH) plays an important role in sexual development. An FSH test to measure the level of FSH in the bloodstream may be done if puberty seems to be starting earlier or later than expected.
Hemoglobin is a protein in red blood cells. A hemoglobin test can be done as part of a routine checkup to screen for problems and or because a child isn't feeling well.
