No bleeding required: Anemia detection via smartphone - Instead of a blood test, an app uses photos of someone’s fingernails to determine whether the level of hemoglobin in their blood seems low, as reported in Nature Communications.

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No bleeding required: Anemia detection via smartphone - Instead of a blood test, an app uses photos of someone’s fingernails to determine whether the level of hemoglobin in their blood seems low, as reported in Nature Communications.