Q:

According to the Quran, is man created from a clot of blood?

In the very first revelation on the prophet in Cave of Hira, when the light (Gabriel) spoke the to prophet for the first time, I see a technical difficulty, when Gabriel said, God created man from a clot of blood. This is not true. Blood has no role in creation of human being. Why it was said, man was created from a clot of blood? This is surah 96 verse 1-3
Shakir
Read in the name of your Lord Who created.

Shakir
He created man from a clot.

Shakir
Read and your Lord is Most Honorable

A:

If you see sahih international the translation says "clinging substance".
The word used in the Quran is عَلَقٍ (alaq), which would denote "hanging" or "clinging".
It also has roots to علقة (alaqah), which would mean a "leech" (which is a worm that hangs or clings to its host and sucks blood).
Below are the images of a leech and embryo.
Between the 37th and 44th day (16 - 17 - 18 in image), the embryo looks similar to a leech. The embryo also acts like a leech by clinging on its host and drawing its nutrition from its host. 

