FUE hair transplant 5 days ago. Some of the scab having hair but some scabs don't, it seems to be only blood clots? (Photos)

If you are having issues after surgery, especially with "blood" you should contact your doctor.

this is a normal process and over the course of the next couple weeks as you begin cleansing and washing your recipient region, you'll find that the scabs will improve.

An FUE is treated just like a regular hair transplant with regard to the recipient area, but the donor area has open wounds which require daily washing with soap and water. Within 3 days of surgery, you can resume full activities, heavy exercises if you wish. The recipient area requires daily washes as well to keep the recipient area free of crusts. I generally recommend the use of a sponge and supply my patient with a surgical sponge to fill with soapy water and press on the recipient area daily. By repeating this daily, all crusts can be washed off without any fear of losing grafts. IF any crust are present, use a Q tip and dip it into soapy water, and roll it on the crusts and that will lift them off without dislodging them, but never rub them, just roll the Q tip on the recipient crust. I like to see no evidence of any crusting in the recipient area and the crusts from the donor area gone in 7-10 days with daily washing.
 I don't like the idea of anyone removing grafts that have scabs on them because we have published a paper in a formal medical journal, that when a person pulls off a scab (crust) from a recipient area in less than 12 days, the risk of losing the graft is very high.