The synchrometer didn't work so well in Indiana
In 1993, while Clark lived and practiced in Indiana, a former patient complained to the Indiana attorney general. An investigator for the Indiana Department of Health and a deputy attorney general visited her office incognito as part of a sting operation. Clark proceeded to test the investigator and "told him he had the HIV virus [sic], but said that he did not have cancer." She told the investigator that she could cure his HIV in 3 minutes, but that he would "get it back" unless he committed to returning for six more appointments. She then ordered blood tests from a laboratory. Upon learning of the undercover investigators' status, Clark stated that everything she had told them had been a "mistake".
Speaking of the synchrometer, Joseph Pizzorno, a prominent naturopathic physician, evaluated Clark's claims and found that her books mixed patients with conventionally diagnosed cancer with those whose cancer diagnosis was based solely on her use of the "Syncrometer". The patients with medically diagnosed cancer did not respond to Clark's treatment, while those she had diagnosed using the "Syncrometer" were "cured". Pizzorno concluded that Clark's treatments were ineffective and that treatments based on Clark's recommendations "pose a substantive public health danger".
If it looks like a duck, smells like a duck and QUACKS like a duck, it might be Hulda!