Here’s a tip: Don’t graph your patient if their hands have spent the last few minutes in water. Allow me to illustrate.
The other day I decided to graph my wife at home. We had just finished cleaning the kitchen and doing dishes, so her hands had been continually wet for about 15 minutes. Take a look at her graph:
Note that all 6 hand meridians read much higher than the foot meridians. This gives the false impression that she has a belt block. Also, the excessive hand meridians increase the mean of the graph, thus making all the foot meridians look deficient when they are actually normal.
Of course, the actual cause of the high hand readings is that the skin has been saturated with moisture and has not yet dried out. Moistened skin is more conductive than dry skin, and so you see the results shown.
Now take a look at her graph a couple of days later. This time, her hands were dry, and the results look much more balanced.
All the foot meridians were indeed normal, and the hand meridians had imbalances at TE, SI and LU. Also note how the deficient HT was disguised by the wet hands in the previous graph.
The take-home point here is to make sure your patient has dry hands and feet before performing the graph exam. If your patient has just washed his or her hands, make sure the hands have been dried thoroughly, and air dried for a few minutes before you do the exam. Similarly, if the feet have been soaking (in wet socks, for example) let them fully dry before you test.
Just a little tip to increase your accuracy.