Kidney purify your blood. You may say that lungs also do the same job.
our kidney purifies our blood, and removes all unwanted salts
liver
lungs
The Kidneys
The kidneys are responsible for purifying the blood by filtering out waste products and excess substances, which are then excreted as urine.
heart is the main organ that pumps the blood to circulate all over the body.
Oxygen exchanges with CO2 (Carbon dioxide) to "purify" blood. This takes place in the aveoli (in the lungs) the blood is transported via blood vessels. Kidneys also purify blood
There are two organs, the lungs and the blood.
Lymphatic system
An enlarged spleen can interfere with blood clotting. The spleen is a multifunctional organ that helps produce platelets, which serve to clot the blood.
When a person is receiving an organ transplant, it is necessary for the receiving organ to come from a person with a blood type similar or complimentary to the receiver's blood type. This helps ensure that the organ will not be rejected by the receiver's body.