Influence of haematocrit level on the kinetics of blood spreading on thin porous medium during dried blood spot sampling

- Blood spreading kinetics on porous medium is studied.
- Pig's blood was used to mimic the behaviour of human blood.
- Blood droplet height, base radius and contact angle are universal functions of dimensionless time.
- Prediction and control of spreading behaviour of blood on thin porous substrates.
- Haematocrit effects on the spreading dynamics of blood are determined.