Once U land here in qatar , You have to do as follows:
1)Obtain a Blood test report to know your Blood group
2)Obtain an appointment with Medical Commission ; they will take your blood sample and Xray to know you dont have a Contagious disease
3)Once you will clear Medical you will be required to go to CID for finger print scanning.
Once they give clearance your RP/Visa will be pasted.