# Fertility diagnostic and testing research > Live situation record from CLSTR: https://clstr.news/situations/fertility-diagnostic-and-testing-research > Updated: 2026-09-16T05:50:37.000Z. Sources: 5. Developments: 2. Medical experts and researchers are evaluating the efficacy and application of various fertility diagnostic tools. Initial guidance emphasizes that menstrual regularity alone is insufficient to determine reproductive health, recommending clinical assessments like Anti-Müllerian Hormone (AMH) testing and ultrasound to gauge ovarian reserve, particularly as women approach age 35. Subsequent research has highlighted the limitations of these diagnostic methods. A study from Flinders University noted that while AMH testing has seen a significant increase in use, it cannot accurately predict the likelihood of natural conception or the specific timing of a woman’s reproductive window. Furthermore, clinical trials regarding embryo testing have shown mixed results. A study involving fertility centers in China found that non-invasive embryo testing (niPGT-A) did not provide a statistically significant improvement in pregnancy rates for women aged 35 to 42 compared to standard visual grading, leading researchers to question its routine use for that demographic. ## Timeline ### 2026-09-16: Research highlights limitations in fertility and embryo testing Recent studies indicate that common fertility tools, including AMH blood tests in Australia and non-invasive embryo screening in China, may not provide the predictive accuracy expected by patients. 3 sources. https://clstr.news/cluster/research-highlights-limitations-in-fertility-and-embryo-testing ### 2026-08-26: Reproductive health experts advise fertility assessments beyond menstrual regularity Medical experts emphasize that regular menstruation does not guarantee fertility, advising AMH testing and egg freezing, especially around age 35 or for those with metabolic concerns like PMOS. 2 sources. https://clstr.news/cluster/reproductive-health-experts-advise-fertility-assessments-beyond-menstrual-regularity --- Cite as: Fertility diagnostic and testing research. CLSTR, https://clstr.news/situations/fertility-diagnostic-and-testing-research