Analysis of the proportion and clinical characteristics of obstructive sleep apnea in women with polycystic ovary syndrome

Daily remote urine hormone monitoring of LH and PdG, together with age and cycle start day, can identify menstrual cycle phase and day with 95% confidence; this supports precise, patient-centric cycle tracking outside clinic settings.

Using Hormone Data and Age to Pinpoint Cycle Day within the Menstrual Cycle — Hills et al., Medicina (paywalled) · source ↗

• multimodal
• rpm
• self-collection
• fertility
• hormones
• urine

Self-collected salivary progesterone and the ratio of estradiol to progesterone showed strong agreement with serum levels, supporting the use of saliva as a noninvasive matrix for monitoring the menstrual cycle.

Salivary estradiol and progesterone across the menstrual cycle: Association and agreement with serum concentrations — Goldenstein et al., Physiological reports · source ↗

• venous-agreement
• blood
• self-collection
• fertility
• hormones
• saliva

In a large study using self-collected capillary blood, current vaping and smoking were independently associated with lower levels of anti-Müllerian hormone, a marker of ovarian reserve. This demonstrates the utility of decentralised capillary sampling for large-scale epidemiological research on reproductive health.

E-cigarette use (vaping) and cigarette smoking are associated with reduced markers of ovarian reserve: a cross-sectional study of 16,087 women — Getreu et al., BMC women's health (paywalled) · source ↗

• blood
• self-collection
• capillary
• fertility
• hormones

This study demonstrates that a memristor sensor can identify distinct electrical signatures in saliva and urine corresponding to different ovulation phases, suggesting a potential route for noninvasive home fertility monitoring.

A Noninvasive Method for Dynamic Ovulation Monitoring Based on Memristor — Chen et al., ACS omega · source ↗

• fertility
• hormones
• liquid
• urine
• saliva

Capillary fingerstick sampling showed high correlation and agreement with venous sampling for serum AMH but with proportional bias, so it may improve access to testing yet should not be considered fully interchangeable without further validation.

Comparison of serum anti-Müllerian hormone concentrations measured in capillary fingerstick and venous samples from Korean reproductive-aged women — Lavadia et al., Clinical and experimental reproductive medicine (paywalled) · source ↗

• blood
• capillary
• validation
• venous-agreement
• acceptability
• fertility
• hormones