Hey !!
Diploma in medical laboratory technology is a 2 year course. The minimum eligibility for this diploma is 10+2 with minimum of 50% marks in science subjects. The admission is direct or else through entrance exams in some institutions. You will ve a salary package of 2 to 5 lakhs. You will have a plenty of job oppourtunities like CT Scan technicians ,  Anaesthesia Technicians , etc.
But before all that you need to note that you can't be eligible to this course after 10th. You need to take science subjects in your pre college or higher secondary.
Don't lose hope !!
Best of Luck !!