Dear friend, thank you very much for your question, here you have not mentioned your educational qualifications and what you are doing currently. The nature of job of a laboratory attendant to look after the routine jobs of a laboratory. There are many institutions and universities which offer many diploma courses. The main diploma courses are ;
Diploma in Medical laboratory Technology, Diploma in Radiology, Diploma in electronics, Diploma in Clinical microbiology and many more.
The diploma in medical laboratory technology, this is twelve months jobs program, divided into two semesters , where the students get hands on training on all sorts of techniques related to medical aspects, under the supervision of expert pathologist or trained experts. On successful completion of training the students are also offered placements by institutes. The main subjects covered under the diploma program are microbiology principles and applications, bacteriology techniques, pathology, biochemistry, mycology and parasitology, hematology and clinical pathology, histotechnology, blood banking, Immunology., basics of anatomy and physiology,

The opportunity of medical laboratory technology course is huge and there are many pathological laboratories, hospitals, diagnostic and medical lab, medical records and transcription organizations, clinical and medical research organizations, pharma and biotech companies, medical equipments and device companies and the school, colleges and universities laboratories, and finally blood banks where the medical laboratory technologist get opportunity.
The eligibility is +2 in science from a recognized institution / colleges or university.
Diploma in Radiology and diagnostics, here the diploma is of one year and divided into two semesters. The candidates are given training for radiology (X-Ray) and other related techniques. The course will train the students to X-ray the patients and other related techniques.

Hi

You can go to B.Sc. (Medical Lab. Technology) after your 12th class. Eligibility for B.Sc. (Medical Lab. Technology) in most of the top universities is pass with 60% aggregate marks in 10+2 (with English, Chemistry and Maths or Biology or Biotechnology) OR 2 yrs. Diploma in MLT after 10th.

This includes skills to practice as laboratory professionals in health administration and management. The students turn out ready for careers in the diagnostics labs, academics and may set up their own diagnostic labs.

For having wast and complete knowledge in your field, you must go to the top universities of India such as:

• Loyola College
• Lovely Professional University
• Hansraj College
• Fergusson College

I hope it helps.