Most regular GP clinics or polyclinics in the Yishun and AMK area can do basic pre-pregnancy blood tests for both of you, so that is a good first stop to check what is covered. If you want a more comprehensive package for both husband and wife together, a private O&G clinic might make more sense since they can tailor the screening to pre-conception needs specifically. Worth calling ahead to confirm they do couples pre-pregnancy screening, because not every clinic packages it that way. The polyclinic is more affordable but the private route gives you more options under one roof lah.