Measuring anti roll bar motion ratio

When measuring motion ratio of the anti roll bar… I understand you have to remove the spring off the coil over on the side you’re measuring. Do you also remove the spring from the coil over on the other side of the axle? Otherwise I assume that spring rate would have an effect on getting to full droop to full compression meansurements? Thanks for the clarification.

I would not want any force on the suspension at all, so i would remove the drop link on the other end.