What is the best test to detect herpes in skin lesions?

Polymerase chain reaction (PCR) techniques appear to be more sensitive and specific in detecting herpes simplex virus (HSV) in genital lesions (strength of recommendation [SOR]: A, based on 2 diagnostic cohort studies); however, viral culture remains the gold standard (SOR: C, based on expert opinion). Studies of serologic and antibody detection tests report higher sensitivities than viral culture (SOR: C, based on consensus guidelines). Cytologic tests such as the Tzanck smear and Papanicolaou (Pap) smear have poor sensitivities and specificities and should not be relied upon for a diagnosis of genital herpes (SOR: C, based on expert opinion)