The subcritical adhesion test results from the SLBT and DCB were different; however, it was unclear if the differences were due to the tests themselves or some experimental artifact. Significantly greater initial SERR were obtained with the DCB, which facilitated characterizing the adhesion at a wider range of SERR and moisture levels than the SLBT. However, the DCB, exhibited some unusual behavior where the debond apparently reversed direction, probably due to swelling. Lastly, care must be taken when using the SLBT due to the affects of creep.