TEG platelet map tracing. TEG platelet map tracing. Note the insert which shows the degree of platelet inhibition both as a percentage of total as well as the actual MA associated with the pathway. This assay shows 75.5% inhibition in the ADP pathway. ADP, adenosine diphosphate; MA, maximal amplitude; TEG, thrombelastography-platelet mapping. Louise Y Y Yeung et al. Trauma Surg Acute Care Open 2016;1:e000022 Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://www.bmj.com/company/products-services/rights-and-licensing/