Timing and women's hormone tests

Why timing may matter

Some reproductive hormones vary across the menstrual cycle. If a clinician or fertility service requested the test, follow its instructions about the cycle day and timing. Record the first day of your last menstrual period and relevant contraception or hormone treatment when asked.

Perimenopause is often a clinical diagnosis

NICE advises that in otherwise healthy people aged 45 or over with menopause associated symptoms, perimenopause and menopause are usually identified without laboratory tests. NICE also advises against using FSH while taking combined oestrogen and progestogen contraception or high dose progestogen.

FSH may be considered in some people aged 40 to 45 with relevant symptoms and menstrual change, or under 40 when menopause is suspected. This decision belongs with the clinician assessing the person.

PMOS, previously called PCOS

Symptoms associated with polyendocrine metabolic ovarian syndrome can have several causes. A GP or specialist may arrange hormone or metabolic blood tests and sometimes an ultrasound as part of assessment. A screening profile cannot diagnose the condition on its own.

Before booking

Check whether you need a diagnostic assessment rather than screening, whether a particular cycle day is required and who will interpret the results. Do not change hormone treatment or contraception based only on a private screening result.