An Error-Free System: Blood Clotting

An Error-Free System: Blood Clotting

By Harun Yahya

blood clotting

The system that enables the formation of the clot, determining its extent, strengthening or dissolving the formed clot undoubtedly, has an absolute irreducible complexity.

Everybody knows that bleeding will eventually stop when there is a cut or when an old wound starts bleeding again. Where the bleeding is, a blood clot forms that hardens and heals the wound in due time. This may be a simple and normal phenomenon for you, but biochemists have shown through their research that this actually is the result of a very complicated system at work. The lack of any one component of this system or any damage to it would render the whole process useless.

Blood has to coagulate in the right time and place and when normal conditions are restored, the clot should vanish. The system functions flawlessly down to the minutest detail.

If there is bleeding, the clot should form immediately in order to prevent the creature from dying. Furthermore, the clot should cover the entire wound and, more importantly, should only form over, and remain right on top of, the wound. Otherwise, all the blood of the creature could coagulate and cause its death, which is why the clot should form at the right time at the right place.

The smallest elements of the bone marrow, the blood platelets or thrombocytes, are crucial. These cells are the main elements of the coagulation of blood. A protein, called the Von Willebrand factor, ensures that, in their continuous patrol of the bloodstream, these platelets do not miss the place of the injury. The platelets that become entangled in the location of the injury release a substance that collects countless others to the same place. These cells eventually shore up the open wound. The platelets die after performing their duty in locating the wound. Their sacrifice is only a part of the coagulation system in the blood.

Thrombin is another protein that facilitates coagulation of blood. This substance is produced only at the location of the wound. This production must be neither more nor less than necessary and has also to start and stop exactly at the required times. There are more than twenty body chemicals called enzymes that have roles in the production of thrombin. These enzymes can trigger its reproduction or halt it. The process is under so much scrutiny that thrombin only forms when there is a real wound to the tissues. As soon as the enzymes of coagulation reach a satisfactory level in the body, fibrinogens that are composed of proteins are formed. In a very short while, a mesh of fibers forms a web, which is formed at the location of the escaping blood. In the meantime, patrolling platelets continue to become entangled and accumulate at the same location. What is called a clot is the plug that is formed due to this accumulation.

When the wound totally heals, the clot dissolves.

The system that enables the formation of the clot, determining its extent, strengthening or dissolving the formed clot undoubtedly, has an absolute irreducible complexity.

The system works flawlessly down to the minutest detail.

What would happen if there were small problems with this perfectly functioning system? For example, if there was coagulation in the blood even without a wound, or if the clot could easily break off from the wound? There is a single answer to these questions: in such cases, the bloodstream to the most vital and intricate organs, such as heart, brain, and lungs, would be clogged with clots, which would inevitably bring death.

In reality, this shows us one more time that the human body is flawlessly designed. It is impossible to explain the clotting system of the blood through the hypothesis of coincidence or “gradual development” as asserted by the theory of evolution. Such a carefully engineered and calculated system as this is indisputable evidence of the perfection in creation. Allah, Who created us and placed us on this earth, has created our bodies with this system, which protects us in many cases of injury that we encounter throughout our lives.

The clotting of blood is very important not only for visible injuries but also for the ruptures of capillaries in our bodies that happen all the time. Although unnoticed, there are continuously small internal bleedings. When hitting an arm against a door or sitting down too heavily, hundreds of capillaries are ruptured. These bleedings are immediately stopped by means of the clotting system and the capillaries are reconstructed in their normal condition. If the impact is more serious, then the internal bleeding is stronger, giving way to the bruising commonly termed “turning purple”. A human lacking the coagulation system would have to avoid even the smallest impacts. Hemophilic patients, having defective coagulation systems, live their lives like that. Patients with advanced hemophilia unfortunately do not survive too long. Even small internal bleedings, inflicted by a simple slip and fall, could be enough to end their lives. Due to this simple reality, each individual should consider the miracle of creation within his/her own body and be thankful to Allah, Who created that body flawlessly. This body is a blessing to us from Allah, a single cell of which we cannot even reproduce. When addressing mankind, Allah says:

“We created you, so why do you not confirm the truth?” (Al-Waqi`ah: 57)


A Note by the Editor:

Allah the Almighty says in the Ever-Glorious Qur’an what means,

“He [Allah] hath created the heavens without supports that ye can see and hath cast into the earth firm hills so that it quake not with you, and He hath dispersed therein all kinds of beasts. And We send down water from the sky and We cause (plants) of every goodly kind to grow therein. This is the Creation of Allah. Now show me that which those (ye worship) beside Him have created. Nay, but the wrongdoers are in error manifest!” (Luqman 31: 10-11)


“We shall show them Our portents on the horizons and within themselves until it will be manifest unto them that it is the Truth. Doth not thy Lord suffice since He is Witness over all things? How! Are they still in doubt about the meeting with their Lord? Lo! Is not He surrounding all things?” (Fussilat 41: 53-54)



Harun Yahya was born in Ankara in 1956. He studied arts at Istanbul’s Mimar Sinan University and philosophy at Istanbul University. Since the 1980s, the author has published many books on political, faith-related and scientific issues. Harun Yahya is well known as an author who has written very important works disclosing the imposture of evolutionists, the invalidity of their claims and the dark liaisons between Darwinism and bloody ideologies. Some of the books of the author have been translated into English, German, French, Spanish, Italian, Portuguese, Albanian, Arabic, Polish, Russian, Bosnian, Indonesian, Turkish, Tatar, Urdu and Malay and published in the countries concerned. Harun Yahya’s books appeal to all people, Muslims, and non-Muslims alike, regardless of their age, race, and nationality, as they center around one goal: to open the readers’ mind by presenting the signs of Gods eternal existence to them.


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