Abstract: Apparatus and methods for non-invasive measurement of a subject's venous pressure, and particularly the subject's central venous pressure (CVP). The apparatus comprises a probe with a load cell. The method makes use of a non-invasive medical device or technique, such as an ultrasound system, to visualize the internal jugular (IJ) vein. Once the IJ has been located, the operator pushes on the surface of the neck with the probe until the external pressure is sufficient to collapse the IJ. The load cell within the probe determines the amount of force applied, and the applied force is converted into venous pressure.