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Accepted for/Published in: Journal of Medical Internet Research

Date Submitted: Feb 23, 2025
Open Peer Review Period: Feb 24, 2025 - Apr 21, 2025
Date Accepted: Jul 17, 2025
(closed for review but you can still tweet)

The final, peer-reviewed published version of this preprint can be found here:

Digitally Enabled AI-Interpreted Salivary Ferning–Based Ovulation Prediction: Feasibility Study

Peebles E, Finley W, Nguyen TM, Barrett S, Thirumalaraju P, Kanakasabapathy MK, Kandula H, Sarcione C, James KE, Shafiee H, Mahalingaiah S

Digitally Enabled AI-Interpreted Salivary Ferning–Based Ovulation Prediction: Feasibility Study

J Med Internet Res 2025;27:e73028

DOI: 10.2196/73028

PMID: 40763349

PMCID: 12365558

Digitally enabled AI-interpreted salivary based ovulation prediction: a feasibility study

  • Elizabeth Peebles; 
  • William Finley; 
  • Thao-Mi Nguyen; 
  • Samuel Barrett; 
  • Prudhvi Thirumalaraju; 
  • Manoj Kumar Kanakasabapathy; 
  • Hemanth Kandula; 
  • Carrie Sarcione; 
  • Kaitlyn E. James; 
  • Hadi Shafiee; 
  • Shruthi Mahalingaiah

ABSTRACT

Background:

Females with irregular or unpredictable cycles, including those with polycystic ovary syndrome (PCOS), have limited options for validated at-home ovulation prediction. The majority of over-the-counter ovulation prediction kits use urinary luteinizing hormone (LH) indicators that were optimized for those with regular menstrual cycles exhibiting a predictable mid-cycle LH surge. Artificial intelligence (AI) holds potential to address this health deficit via a smartphone-based salivary ferning ovulation test. Research on populations with irregular menstruation and PCOS can be challenging due to the duration and frequency of menstrual cycles.

Objective:

The objective of this study was to determine the feasibility for participants with diverse menstrual cycle lengths to complete study tasks designed to train and develop a potential future AI model for salivary-based ovulation prediction.

Methods:

Participants were recruited for two menstrual cycles where retention, engagement, and adherence were evaluated. Participation entailed remotely collecting and uploading daily data (saliva, LH values), attending lab visits, and returning biological saliva samples.

Results:

Of the 133 females recruited from February to October 2023 via targeted patient messages and a public research website, 69 were eligible (age 19 to 35 years old at enrollment, currently menstruating, able to read and comprehend English, weigh more than 110 pounds, have an active primary care or gynecological provider, and able to commute to the Mass General Hospital main campus within 10 days of their ovulatory event). Of the 43 eligible participants who consented and completed the baseline survey, the majority were White (56%), employed (77%), highly educated (74% college or more), and had an average±standard deviation body mass index of 28.8±4.8 kg/m2. Of those who received a Study Kit, 57% of participants (n=17) began data collection, 31% of participants (n=9) provided data for one menstrual cycle, and 24% of participants (n=7) completed the study. Nineteen participants withdrew from the study, citing menstrual cycles being too irregular for the study timeline (n=5), becoming pregnant (n=4), moving outside the study area (n=4), no time to dedicate to the study (n=2), ineligibility (n=2), and stress related to observing anovulation (n=2).

Conclusions:

To optimize future scaled participant completion, the study design would include a more targeted recruitment message to address the high ineligibility status, streamline study procedures to ease participant burden, and incorporate health education to equip participants with ovulatory health information to ameliorate the potential stress impacts of observing anovulation. After optimization, when scaled, this study design could provide an AI model with sufficient data to develop a smartphone-based ovulation predictor specifically tested on females with irregular or unpredictable cycles, including those with PCOS. Well informed study design is the foundation to AI advancement and femtech growth, particularity for ovulatory and fertility digital health.


 Citation

Please cite as:

Peebles E, Finley W, Nguyen TM, Barrett S, Thirumalaraju P, Kanakasabapathy MK, Kandula H, Sarcione C, James KE, Shafiee H, Mahalingaiah S

Digitally Enabled AI-Interpreted Salivary Ferning–Based Ovulation Prediction: Feasibility Study

J Med Internet Res 2025;27:e73028

DOI: 10.2196/73028

PMID: 40763349

PMCID: 12365558

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© The authors. All rights reserved. This is a privileged document currently under peer-review/community review (or an accepted/rejected manuscript). Authors have provided JMIR Publications with an exclusive license to publish this preprint on it's website for review and ahead-of-print citation purposes only. While the final peer-reviewed paper may be licensed under a cc-by license on publication, at this stage authors and publisher expressively prohibit redistribution of this draft paper other than for review purposes.