Lab study, 2004
Can a portable device accurately measure blood oxygen levels across the menstrual cycle?
A portable device called Astrim can reliably measure blood oxygen levels using near-infrared light. Body temperature and hormone levels measured in urine increased in the premenstrual phase.
What they did
Twenty-five young women not on medications participated. A portable device measured blood oxygen using near-infrared light during the follicular and late luteal phases across three cycles. Measurements were taken after overnight fasting. Women recorded daily physical and emotional symptoms.
What they found
Oral temperature and hormone levels measured in urine significantly increased during the late luteal phase (before menstruation). The device measurements of blood oxygen levels were reliable and repeatable.
What it means for you
The study showed this portable device can reliably measure blood oxygen levels across the menstrual cycle using near-infrared light. This was a small study in young healthy women not on medications, so the findings may not apply to older women or those with health conditions.
25
women in study
3
menstrual cycles studied
20.4
average age in years
About the study
- Original title
- Applicability of a Portable Non-Invasive Device Evaluating Hemoglobin and Peripheral Circulative Function in Eumenorrheic Young Women with Premenstrual Discomfort
- Authors
- Tamaki Matsumoto, Noriyuki Tatsumi
- Journal
- Blood
- Year
- 2004
- Study design
- Lab study
- What was tested
- Measurement using a portable infrared device
- Read the paper
- doi.org/10.1182/blood.v104.11.3678.3678
Topics
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