THERM Classifications

Thermography Classifications Explained

TH-1 classification shows a normal thermogram. This thermal profile does not contain any of the features associated with abnormal breast tissue. If your results are T1, we typically recommend a repeat thermogram every year.

Please Note: A TH-1 score does NOT mean that you should forego other means of routine evaluation, or disregard any concerning physical symptoms.


TH-2 result also shows a normal thermogram, but contains thermal features frequently associated with benign (non-cancerous) functional changes. These include pregnancy, lactation, or hormone imbalances. While a TH-2 score does not indicate breast tissue abnormality, we recommend a follow up study in six months. If the results are consistent with the first study, we typically recommend a repeat thermogram every year. 

Please Note: As with a TH-1, a TH-2 score does NOT mean that you should forego other means of routine evaluation, or disregard any concerning physical symptoms.


TH-3 result shows a profile of unusual breast tissue processes and/or blood vessels associated with a minor risk (less than 10 – 20% as specified in your individual report) for a diagnosis of breast cancer. It is more likely that these features are benign in nature, such as inflammation, acute cysts, infection, fibro-adenoma, or simply your own personal breast tissue profile. We recommend that you review your thermography report with your personal physician and decide a course of action. Clinical experience suggests that targeted ultrasound can be the single most effective means of follow-up to an unusual breast study. 

We recommend ongoing risk management including:

–Consult with your personal physician and obtain a physical examination of your breasts

–With your personal physician, determine a plan for comprehensive breast examination that might include targeted ultrasound, MRI and/or a mammogram.

–Schedule a thermography restudy according to the schedule recommended in the report.


TH-4 and TH-5

These results show tissue abnormalities such as characteristic blood vessel features and/or metabolic conditions that can be consistent with breast cancer.  These are NOT a diagnosis of breast cancer, and you should be aware that an abnormal thermography report can show breast tissue issues years before they will appear on more traditional testing methods. If your thermography report shows a TH-4 or TH-5, our office recommends that you consult with your personal physician as soon as possible, and obtain prompt and comprehensive testing for breast cancer.