Job was advertised in Feb 2011, My interview as on July and on end of October i got security clearance forms. On 20 May 2012 I got appointment letter with medical checkup letter from Nescom hospital.
Medical checkup contains (Blooed Test, Urine Test, Xray Chest, Eye Test, color blindness test, ENT Test, Surgical Test, and 4-5 more signatures from other medical officers).
No one will guide you on how to proceed for medical after they give u forms, Follow proper sequence i.e. (Xray, Blood & Urine Test, Eyes Test, ENT, Surgical...). It will require minimum 2 days because xray, blood & urine report will be given next day, but u can continue to visit Eye , ENT without these reports.
At the end they will give u copy of letter for medical fitness and original will be sent to HR department of your selected office.