diff --git a/app/src/main/java/com/example/refactoredapp/domain/TestRightResultCalculation.kt b/app/src/main/java/com/example/refactoredapp/domain/TestRightResultCalculation.kt
new file mode 100644
index 0000000..63e3a47
--- /dev/null
+++ b/app/src/main/java/com/example/refactoredapp/domain/TestRightResultCalculation.kt
@@ -0,0 +1,10 @@
+package com.example.refactoredapp.domain
+
+import com.example.refactoredapp.data.model.TestRightCalculationData
+import com.example.refactoredapp.data.model.TestRightResultType
+
+interface TestRightResultCalculation {
+    fun getResults(
+        wavelengthToAbsorbance: ArrayList<ArrayList<Double>>
+    ): TestRightCalculationData
+}
\ No newline at end of file