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Why test for irregular or heavy periods?
Irregular periods can be linked to hormonal conditions such as polycystic ovary syndrome (PCOS) or thyroid problems. Heavy periods can lower iron stores and lead to anaemia. Blood tests can measure reproductive hormones, thyroid function and iron levels.
Recommended tests
PCOS profile
Compare pricesMeasures hormones commonly assessed when PCOS is being considered
Testosterone
SHBG
LH
FSH
DHEA-S
Female hormone profile
Compare pricesChecks the hormones that regulate your cycle
Oestradiol
Progesterone
LH
FSH
Prolactin
When to see your GP
See your GP if you bleed between periods, after sex or after the menopause, or if you have severe pelvic pain. Seek urgent help for very heavy bleeding with dizziness or fainting.
Why test for irregular or heavy periods?
Symptom-led matching
See the tests commonly used to investigate this symptom
UKAS accredited labs
Every listed provider uses UKAS-accredited UK laboratories
Clear turnaround
Typical result times shown alongside price and biomarker coverage
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