#feasibility of a Noncontact Photoplethysmography–Based Mobile App for Noninvasive Hemoglobin Monitoring: Exploratory Observational Study Background: Anemia is a widespread global health issue. Hemoglobin (Hb) concentration measurement remains the most common method for anemia screening and diagnosis. In recent years, there has been growing interest in the development of noninvasive point-of-care technologies that eliminate the need for blood sampling. Objective: This pilot study explores the #feasibility of using a noncontact photoplethysmography–based mobile app for Hb monitoring. Methods: Adult volunteers aged 18 years and older, of both sexes, were consecutively recruited. Participants were seated and allowed a 2-minute rest before measurements. During testing, they faced a smartphone running comestai.app which used the front-facing camera to capture facial videos. Simultaneous readings were collected for Hb over approximately 90 seconds using the app. Ambient lighting was standardized for all remote photoplethysmography recordings. No medical decisions were made based on the app-generated data. A complete blood count, including Hb levels, was used as a reference for comparison with the data collected using comestai.app. Results: A total of 555 (female: n=313, 56.4%; male: n=242, 43.6%) individuals participated in the study. The app achieved a mean absolute error of 1.46, a mean absolute percentage error of 11.26, a mean error of −0.67, and a root mean square error of 1.88. The Bland-Altman plot evaluated the agreement between the app-based and laboratory-based Hb measurements, with the mean difference between the 2 methods being −0.70 g/dL. The method demonstrated an overall accuracy of 75%. The area under the curve was 0.701 (95% CI 0.655-0.745). Conclusions: Comestai.app offers an innovative approach to wellness monitoring by providing noninvasive Hb estimation using the smartphone’s front-facing camera. Continued development, including algorithmic refinement and larger-scale validation in diverse populations, will be key to enhancing accuracy and broadening its utility. By leveraging the ubiquity of smartphones, comestai.app contributes meaningfully to the democratization of health monitoring and the promotion of proactive self-care. Trial Registration: ClinicalTrials.gov NCT06427564; https://clinicaltrials.gov/study/NCT06427564

JMIR Formative Res: #feasibility of a Noncontact Photoplethysmography–Based Mobile App for Noninvasive Hemoglobin Monitoring: Exploratory Observational Study #NoninvasiveMonitoring #Hemoglobin #AnemiaAwareness #MobileHealth #HealthTech

See our first February issue:

link.springer.com/journal/4431...

The cover features work by Tomasz P. Rygiel, Katarzyna Mleczko-Sanecka and colleagues showing that liver sinusoidal endothelial cells scavenge #hemoglobin.

-> link.springer.com/article/10.1...

Host genetics affect #plasmodiumfalciparum #gametocytedevelopment.
Our new preprint shows that sexual conversion is higher in erythrocytes with #hemoglobin AS and AC.🦠🩸Check it out!

@itmantwerp.bsky.social, CRUN (Burkina Faso), @cortesmalaria.bsky.social & Guy Caljon's lab.

Characteristics and Risk Factors for Pediatric Sepsis

Lower #hemoglobin, albumin, and platelet counts plus elevated IL-1β were identified as independent risk factors for poor prognosis in #PediatricSepsis, highlighting the need for early monitoring and timely intervention. #Inflammation

Read: doi.org/10.1007/s115...

Symptoms of moderate anemia #anemiaawareness #anemia #blooddisorders #hemoglobin ... Continue to: www.youtube.com/watch?v=RXmB...

Hemoglobin Concentration in Early Pregnancy and Severe Neonatal Morbidity and Mortality: Population-Based Cohort Study: Annals of Internal Medicine: Vol 0, No 0 Background: Anemia affects up to 50% of pregnancies. The relation between early pregnancy maternal hemoglobin concentration and important perinatal outcomes in high-income countries is largely unknown...

Anemia materna y eritrocitosis relativa se asocian con la morbilidad y mortalidad neonatal #hemoglobin #pregnancy #neonatal www.acpjournals.org/doi/10.7326/...

Delayed Colonoscopy After Positive FIT Not Linked to Worse CRC Outcomes There is no increased risk for colorectal cancer, advanced-stage cancer, or advanced adenoma when colonoscopy is delayed up to 24 months after a positive FIT result.

Among patients with high #fecal #hemoglobin, ensuring follow-up completion may be more important than strict timing targets.

Read More: https://bit.ly/4bCYNKi

Iron in blood: normal values and causes of increase/decrease #iron #bloodtest #hemoglobin #analyses
... Continue to: youtube.com/shorts/oAgF2...

Haemoglobin Haemoglobin is a protein in your red blood cells.Your red blood cells carry oxygen throughout your body. It powers your cells and gives oxygen

🩸 #Anemia is defined as a low number of red $blood cells.

🫀 #Hemoglobin is the main protein in your red blood cells.

🔻⬇️ If you have anemia, your hemoglobin level will be low too.

🔴 Read more about Hemoglobin from #FADIC:
fadic.net/haemoglobin

Characteristic signs of anemia #blooddisorders #anemia #hemoglobin #anemiasigns ... Continue to: www.youtube.com/watch?v=vSin...

What gives red blood cells their red color? A) Iron B) Calcium C) Potassium D) Protein #redbloodcell What gives red blood cells their red color? A) Iron B) Calcium C) Potassium D) Protein #redbloodcell

What gives red blood cells their red color?
A) Iron
B) Calcium
C) Potassium
D) Protein
#redbloodcells #minerals #hemoglobin #bloodcomposition ... Continue to: www.facebook.com/113009240922...

In what situations is vitamin B12 especially needed? #b12 #vitaminb12 #hemoglobin #homocysteine
... Continue to: youtube.com/shorts/3rWN6...

Why does anemia occur? #redbloodcells #anemia #anemiaawareness #hemoglobin ... Continue to: www.youtube.com/watch?v=f1tR...

Higher Hemoglobin Levels Linked to Improved Survival in MDS Maintaining higher hemoglobin levels is associated with improved OS in patients with MDS, regardless of disease risk or ferritin levels.

Maintaining higher levels of #Hemoglobin may be correlated with improved overall survival in patients with #MyelodysplasticSyndromes (MDS), regardless of disease risk or ferritin levels. Presented at the 67th @ash.hematology.org Annual Meeting

Read more: https://bit.ly/3L8nrrx

#RareDisease #MDS