What does the women’s hormones blood test show?
Oestrogen
Oestrogen is the main female sex hormone. It is needed for the menstrual cycle, pregnancy, healthy bones, and more. The blood test checks for the levels of oestradiol (the strongest of three oestrogens) in the blood. If you have too much or not enough oestradiol, you may experience irregular periods, hot flushes, depression and anxiety, a low sex drive, and sleep problems.
Luteinising hormone (LH)
Luteinising hormone (LH) is important in fertility and triggers ovulation. If LH levels are imbalanced, you may have irregular periods and trouble getting pregnant.
Follicle-stimulating hormone (FSH)
Follicle-stimulating hormone (FSH) is also important in fertility. It is important in the production of eggs by the ovaries and for ovulation. High FSH levels can be a sign of the menopause. If levels are too high or too low, you may have trouble getting pregnant.
Testosterone – including free testosterone, sex hormone-binding globulin (SHBG) and free androgen index (FAI)
Testosterone is essential for healthy muscles and bones, sex drive, mood, and clear thinking. Levels naturally decline as we age, but if you are outside the normal range, you might feel tired, have low moods and a low sex drive.
Sex hormone-binding globulin (SHBH) controls the amount of testosterone your body can use, and free androgen index (FAI) is a ratio worked out to see if your levels of sex hormones are in the normal range.
Prolactin
Prolactin is responsible for lactation (making and secreting breast milk), and the development of breast tissue. Too much prolactin can cause irregular periods and a low sex drive.
Thyroid function – thyroid-stimulating hormone (TSH) and free T4 (FT4)
If your thyroid is overactive or underactive, hormonal imbalances can cause symptoms such as weight changes, sleep problems, anxiety and depression, and tiredness. The blood test checks thyroid-stimulating hormone (TSH) and free T4 (FT4). TSH is responsible for telling your thyroid the amount of hormone it needs to make. FT4 is the main hormone produced by the thyroid gland.