An experiment was undertaken to determine the intra- and interexaminer reliability of a paraspinal skin temperature differential instrument. 19 pain-free female chiropractic college students participated as subjects for the investigation. Three separate areas of the spine (C4-T2) and substantial agreement in the region T4-T8. The lumbar region could not be evaluated with he Kappa statistic due to limited variation. Following agreement for a positive finding in a given area, the numerical ratings were evaluated for agreement with the intraclass correlation coefficient (ICC). The first observation between examiners indicated fair agreement (ICC=0.2756, p=0.0478). The second observation between examiners had substantial agreement (ICC=0.6402, p=0.042). Intraexaminer agreement was moderate for one examiner (ICC=0.5078, p=0.0016). The other examiner showed an excellent level of agreement (ICC=0.8588, p<0.001) between observations.