IVF Thyroid
IVF and Thyroid Diseases – A Comprehensive Guide
Thyroid and Reproductive Health
Thyroid hormones (TSH, T3, T4) play a significant role in ovulation, embryo development, and implantation.
Pre-IVF Thyroid Evaluation
Evaluation of TSH levels before IVF is routinely recommended. If necessary, free T4 and thyroid antibodies can also be checked.
Ideal TSH Value
In patients planning pregnancy and IVF patients, the target TSH value is generally accepted as <2.5 mIU/L.
Hypothyroidism (Underactive Thyroid)
Characterized by high TSH. It may be associated with ovulation problems, miscarriage risk, and implantation failure.
Hyperthyroidism (Overactive Thyroid)
Characterized by low TSH. It can increase the risk of complications in pregnancy and must be brought under control.
Thyroid Antibodies
Anti-TPO and Anti-Tg positivity has been associated with miscarriage and IVF failure in some studies.
Treatment
• Hypothyroidism → Levothyroxine treatment
• Hyperthyroidism → appropriate medical treatment
• Treatment should be individualized
Monitoring During the IVF Process
Thyroid functions should be monitored throughout the treatment and dose adjustments should be made.
Thyroid in Pregnancy
When pregnancy occurs, thyroid hormone requirements may increase. Close monitoring is necessary.
Clinical Reality
Optimal thyroid function directly affects IVF success and pregnancy health.
Conclusion
Thyroid diseases must be evaluated and treated during the IVF process. Proper management increases pregnancy success.