Some universities ask for equivalence before giving admission or the degree at graduation.
Subjects you need:
GCE ‘O’ and ‘A’ level are considered equivalent to Higher Secondary School Certificate (HSSC/Intermediate) subject to meeting the specified requirement for various stream/groups as under:
i) Pre-Medical Group: Eight/five ‘O’ level subjects (including English, Mathematics, Physics, Chemistry, and Biology) and three ‘A’ levels (Physics, Chemistry and Biology) with minimum E Grade.
ii) Pre-Engineering Group: Eight/five ‘O’ level subjects (including English, Physics, Chemistry, Mathematics Biology/Computer Studies) and three ‘A’ level subjects (Physics, Chemistry and Mathematics) with minimum E Grade.
iii) General Science Group: Eight/five ‘O’ level subjects with three ‘A’ level subjects
iv) Humanities Group: Eight/five ‘O’ level subjects including English and Mathematics with three ‘A’ level subjects.
a- All Pakistani nationals appearing for examinations from Pakistan shall have to pass Urdu, Islamiyat, Pakistan Studies and Mathematics along with other required subjects to qualify for equivalence.
i. If a Pakistani/dual national candidate studies and appears for examination from abroad, Urdu, Islamiyat and Pakistan Studies will not be considered compulsory requirements.
Source:
http://www.ibcc.edu.pk/equivalence.php