The ornamental design for an Apparatus for medical or laboratory Diagnosis, as shown and described.
2. Apparatus for medical or laboratory diagnosis
2.1: perspective
2.2: side
2.3: opposite side
2.4: front
2.5: rear
2.6: top
2.7: bottom
The broken lines in the reproductions illustrate portions of the Apparatus for Medical or Laboratory Diagnosis which form no part of the claimed design.