There is no Necessity for a Medical Examination Before Marriage

Question:

I want to marry my paternal uncles daughter, but she and some of my close companions advised me to have a medical examination so that we may rest assured regarding the genes of heredity. Does this involve any interference in Allaahs Decree and His Divine Predestination? And what is the ruling of the religion on this examination, may Allaah grant you success?
Answer:

I want to marry my paternal uncles daughter, but she and some of my close companions advised me to have a medical examination so that we may rest assured regarding the genes of heredity. Does this involve any interference in Allaahs Decree and His Divine Predestination? And what is the ruling of the religion on this examination, may Allaah grant you success?
Shaykh `Abdul-`Azeez Bin Baz
Fatawa Islamiyah Vol. 5 Page 172

• THE CONDITIONS OF “LA ILAHA ILLA ALLAH
• Buying goods using debit cards
• Haadith Jibril
• Refutation upon the People of Innovation
• The Dajjaal shall be prevented from entering Makkah and Madeenah
• The Virtues of Muharram and Fasting on 'Ashura'
• Waving when giving salaams
• 'An Obligation Cannot Suffice Another Obligation'
• 'Bismillaah' or 'Bismillaah ar-Rahmaan ar-Raheem'?
• 'I am Flying'