Epidural test solution or spinal fluid?
D000767:Anesthesia, Epidural / Q000379:methods*; D000779:Anesthetics, Local; D002555:Cerebrospinal Fluid; D006801:Humans; D006863:Hydrogen-Ion Concentration; D012965:Sodium Chloride
D000779:Anesthetics, Local; D012965:Sodium Chloride