diff --git a/bids-validator/validators/json/schemas/pet.json b/bids-validator/validators/json/schemas/pet.json
index 328537060..656772d86 100644
--- a/bids-validator/validators/json/schemas/pet.json
+++ b/bids-validator/validators/json/schemas/pet.json
@@ -154,74 +154,6 @@
       "$ref": "common_definitions.json#/definitions/Instructions"
     }
   },
-  "allOf": [
-    {
-      "if": {
-        "properties": {
-          "InjectedMass": {
-            "enum": ["n/a"]
-          },
-          "InjectedMassUnits": {
-            "enum": ["n/a"]
-          }
-        }
-      },
-      "then": {},
-      "else": {
-        "required": ["InjectedMass", "InjectedMassUnits"]
-      }
-    },
-    {
-      "if": {
-        "properties": {
-          "SpecificRadioactivity": {
-            "enum": ["n/a"]
-          },
-          "SpecificRadioactivityUnits": {
-            "enum": ["n/a"]
-          }
-        }
-      },
-      "then": {},
-      "else": {
-        "required": ["SpecificRadioactivity", "SpecificRadioactivityUnits"]
-      }
-    },
-    {
-      "if": {
-        "properties": {
-          "ReconFilterType": {
-            "enum": ["n/a"]
-          },
-          "ReconFilterSize": {
-            "enum": ["n/a"]
-          }
-        }
-      },
-      "then": {},
-      "else": {
-        "required": ["ReconFilterType", "ReconFilterSize"]
-      }
-    },
-    {
-      "if": {
-        "properties": {
-          "ModeOfAdministration": {
-            "enum": ["bolus-infusion"]
-          }
-        }
-      },
-      "then": {
-        "required": [
-          "InfusionRadioactivity",
-          "InfusionStart",
-          "InfusionSpeed",
-          "InjectedVolume"
-        ]
-      },
-      "else": {}
-    }
-  ],
 
   "required": [
     "Manufacturer",