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Tuesday, Apr 28, 2026

Masimo Data Backs Pulse Ox Accuracy in Newborns Across All Skin Tones

Largest-ever prospective real-world study, company says

Masimo Corp. today reported study data showing that its pulse oximetry technology accurately monitored hospitalized newborns of all skin tones without dangerous drops in blood oxygen.

The findings come from what the Irvine-based company described as the largest-ever prospective real-world study of its kind, having evaluated 100 newborns.

“Concerns about occult hypoxemia in vulnerable neonates, especially with darker skin tones, prompted this large, investigator-initiated and NIH funded real-world study applying rigorous scientific methods,” Masimo’s Chief Medical Officer Daniel Cantillon said in a statement.

Later this year, Masimo said that it will publish data from another study involving 500 critically ill adult ICU patients of all skin tones.

Shares in Masimo were little changed today at $178.45 apiece and a $9.3 billion market cap (Nasdaq: MASI).

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Yuika Yoshida
Yuika Yoshida
Yuika Yoshida has been a reporter covering healthcare, innovation and education at the Orange County Business Journal since 2023. Previous bylines include JapanUp! Magazine and Stu News Laguna. She received her bachelor's degree in literary journalism from the University of California, Irvine. During her time at UC Irvine, she was the campus news editor for the official school paper and student writer for the Samueli School of Engineering. Outside of writing, she enjoys musical theater and finding new food spots within Orange County.

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