This wasn’t an abnormality, but the norm. 93% of the tests were higher than 34°C. The article also points out the Schoknecht Study, which had 700 subjects, versus the minimal amount in the other cited studies, shows a possible temperature as high as 36.7°C, or almost 3°C higher than assumed by the machine.
For each degree C the temperature is over stated, it increases the test result by 6.7% or more. A test result can overestimated by nearly 20%. Reduce your client’s result by the same 20%, and it may very well bring her below the legal limit. Another tool you can find in the virtual library.