Irregular Periods: Tests You Need in Korea
Irregular Periods: Tests You Need in Korea
Irregular periods are one of the most common reasons women visit gynecology clinics in Korea. While occasional cycle changes can happen because of stress, travel, diet, or lifestyle changes, persistent irregular periods may sometimes indicate hormonal imbalance, ovulation problems, thyroid disorders, or reproductive health conditions such as PCOS or endometriosis. Korean women’s clinics commonly use blood testing, ultrasound imaging, and fertility evaluations to identify possible causes and guide treatment planning.
What Counts as an Irregular Period?
A menstrual cycle is generally considered irregular when the timing or bleeding pattern changes significantly from normal.
Common signs include:
- Cycles shorter than 21 days
- Cycles longer than 35 days
- Missed periods
- Unpredictable cycle timing
- Heavy menstrual bleeding
- Extremely light periods
- Spotting between cycles
- Sudden major cycle changes
Occasional irregularity may not always be serious, but repeated abnormalities usually deserve medical evaluation.
Why Do Doctors Recommend Testing?
Irregular periods can be caused by many different hormonal and reproductive health conditions. Testing helps doctors identify whether ovulation, hormone production, or reproductive organs are functioning normally.
Testing may help evaluate:
- Hormonal imbalance
- Ovulation problems
- PCOS
- Thyroid disorders
- Ovarian reserve
- Uterine abnormalities
- Pregnancy-related conditions
- Stress-related cycle disruption
Doctors usually combine several examinations rather than relying on a single test alone.
Hormone Blood Tests
Hormone testing is one of the most important parts of irregular period evaluation in Korea.
Common hormone tests include:
- FSH (follicle-stimulating hormone)
- LH (luteinizing hormone)
- Estrogen
- Progesterone
- Prolactin
- Testosterone
- AMH ovarian reserve testing
- Thyroid hormones
The timing of blood tests during the menstrual cycle may affect accuracy, so some clinics schedule testing during specific cycle days.
Pelvic Ultrasound Examination
Pelvic ultrasound is commonly used to examine reproductive organs and identify structural abnormalities.
Ultrasound may help detect:
- Ovarian cysts
- PCOS-related ovarian changes
- Uterine fibroids
- Endometrial thickening
- Ovarian abnormalities
- Follicle development problems
Transvaginal ultrasound is frequently used because it provides more detailed imaging of the uterus and ovaries.
PCOS Evaluation in Korea
PCOS, or polycystic ovary syndrome, is one of the most common causes of irregular periods in women.
Korean clinics commonly evaluate PCOS through:
- Hormone blood testing
- Pelvic ultrasound
- Menstrual history review
- Ovulation assessment
- Insulin resistance evaluation
Symptoms associated with PCOS may include acne, weight changes, excess facial hair, and difficulty conceiving.
Pregnancy & Ovulation Testing
Pregnancy-related hormone testing is often included when evaluating missed periods or sudden cycle changes.
Additional reproductive tests may include:
- Pregnancy blood testing
- Ovulation monitoring
- Basal body temperature review
- Fertility hormone analysis
- Ovarian reserve testing
These tests help determine whether irregular cycles are affecting ovulation and fertility.
Thyroid & Metabolic Testing
Hormonal and metabolic disorders outside the reproductive system can also affect menstrual cycles.
Doctors may recommend testing for:
- Thyroid function
- Blood sugar levels
- Insulin resistance
- Vitamin deficiencies
- Stress hormone imbalance
Thyroid disorders are especially important to rule out because they commonly affect menstrual regularity.
Average Cost of Irregular Period Testing in Korea
The cost depends on how many examinations and laboratory tests are included.
Typical price ranges include:
- Gynecology consultation: ₩30,000 – ₩100,000
- Hormone blood testing: ₩100,000 – ₩300,000
- Pelvic ultrasound: ₩70,000 – ₩200,000
- AMH fertility testing: ₩100,000 – ₩250,000
- Comprehensive hormone evaluation package: ₩300,000 – ₩1,000,000+
University hospitals and premium fertility clinics may charge higher consultation fees.
Tips Before Your Appointment
Preparing beforehand may help doctors evaluate menstrual irregularity more accurately.
Helpful tips include:
- Track menstrual cycle dates
- Record symptoms such as pain or spotting
- Bring previous test results if available
- List current medications and supplements
- Note recent weight or lifestyle changes
- Prepare pregnancy and reproductive history information
Cycle tracking apps can also help doctors understand ovulation and bleeding patterns more clearly.
Final Thoughts
Irregular periods can sometimes be temporary, but persistent menstrual cycle changes may indicate underlying hormonal or reproductive health conditions that require medical evaluation. Korean women’s clinics commonly combine hormone blood testing, pelvic ultrasound, thyroid evaluation, and fertility assessments to identify possible causes and guide treatment planning. Early testing can help support reproductive health, menstrual regulation, and long-term women’s wellness.
