Non-invasive Haemoglobin Measurement Using Photoplethysmographic Technique

Abstract

The important component for complete blood count is haemoglobin. The normal Hemoglobin (Hb) concentration in blood is about 12–15 gm/dl for females, 13.5–17.5 gm/dl for males and 11 to 16 g/dl for children. The invasive methods are used to measure the Haemoglobin concentration by ejecting the blood from the patient and subsequently analyzed. The disadvantages of the invasive methods are it causes delay between the blood collection and its analysis causes pain while ejecting the blood and the temperature should be maintained for the blood samples during transportation. The non-invasive method overcomes these disadvantages by pain free analysis of the blood, real time analysis. Proposed technique has 96.56% accuracy compared to clinical measurements.