The current reports of conflicting data regarding efficacy make uncertain the role of TAP block in post cesarean section pain relief. This model would have a better potential for measuring the block's effectiveness. Quantitative sensory evaluation tools such as the von Frey hair tool provides a quantitative reproducible measure of skin sensation and also allows for assessment of block regression over time. Pressure algometry has been established as a clinical and research tool for quantitative assessment of pain levels in multiple pain conditions. A useful inexpensive reliable pressure algometer has recently been described.