Dear Aspirant, A candidate who is appearing for NEET should not have more than 25 years of age for unreserved category candidates and 30 years of age for reserved and PwD category candidates. And you should have studied your +2 with Physics, Chemistry, Biology/Biotechnology, English as core subjects. You should have scored 50% as qualifying marks in your +2 in these subjects if you are from Unreserved category, 40% for OBC/SC/ST and 45% for PWD. Now assuming that you were 17 years in 2003, am guessing you to be 22-23 years old. If you fulfill other criteria and you haven't pursued any other degree, you can attempt NEET and your qualification code will be 02. If you have taken up a B.Sc course and you have had atleast 2 subjects among Physics, Chemistry, Biology/Biotechnology you can still write NEET but with a different qualification code.