Traces of dried blood after Hair transplantation. Any suggestions?

As always check with your doctor, but dried blood  5 days after an HT usually just means you are not washing enough or properly. VERY common and usually nothing to worry about. Either way, it has no affect on the grafts which are deep in the skin. HOWEVER, that dry blood CAN become a breeding ground for bacteria so you want to start washing the area as per your doctors instructions. You should be right as rain.Grow well and heal well.

These areas form crusts which connect to the grafts. Good washing is critical. A regular hair transplant should be washed at the day after the procedure with regard to the recipient area, but the FUE donor
area note that it 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 with FE, not with a strip surgery.
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,.