Measuring fetal oxygen levels using light scattering technology

Trans-abdominal Fetal Pulse Oximetry; Tissue Light Scattering and Signal Integrity

NA · Raydiant Oximetry, Inc. · NCT04876846

This study is testing a new way to measure fetal oxygen levels using light from a special device on the mother's belly to help improve care for pregnant women in their late third trimester.

Quick facts

PhaseNA
Study typeInterventional
Enrollment10 (estimated)
Ages18 Years and up
SexFemale
SponsorRaydiant Oximetry, Inc. (industry)
Drugs / interventionsradiation
Locations1 site (Walnut Creek, California)
Trial IDNCT04876846 on ClinicalTrials.gov

What this trial studies

This study evaluates the properties of maternal-fetal tissue light scattering to improve the accuracy of fetal pulse oximetry. It involves non-invasive measurements taken from the maternal abdomen using a customized device that combines multiple laser sources and detectors. The study aims to gather human measurements to validate computational models against animal data, focusing on women in their late third trimester. Data collected will include maternal statistics and fetal depth measurements, ensuring minimal discomfort during the process.

Who should consider this trial

Good fit: Ideal candidates are women aged over 18 with a singleton, healthy pregnancy at 36 weeks of gestation or later.

Not a fit: Patients with multiple gestations or those under 36 weeks of gestation will not benefit from this study.

Why it matters

Potential benefit: If successful, this study could lead to more accurate monitoring of fetal oxygen levels, potentially improving outcomes for pregnancies at risk of fetal hypoxia.

How similar studies have performed: While this approach is innovative, similar studies have shown promise in non-invasive fetal monitoring techniques.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

1. Women with singleton, healthy pregnancy at gestational age ≥ 36 weeks
2. Age \> 18 years
3. Willing to come in for testing outside of routine business hours (including Saturdays)

Exclusion Criteria:

1. Age \<18
2. Multiple gestation (twins, triplets)
3. Presentation other than vertex or breech
4. \< 36 weeks of gestation

Where this trial is running

Walnut Creek, California

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.

View on ClinicalTrials.gov →

Conditions: Fetal Hypoxia

Last reviewed 2026-05-15 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.