Inform your doctor if you are on any medications, have any allergies or underlying medical conditions before your Herpes Simplex Virus (Hsv) Type 1 & 2 Pcr Qualitative Polymerase Chain Reaction, Amplification Blood. Your doctor will give specific instructions depending on your condition on how to prepare for Herpes Simplex Virus (Hsv) Type 1 & 2 Pcr Qualitative Polymerase Chain Reaction, Amplification Blood.