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. 2019 Mar 28;37(6):1329–1338. doi: 10.1002/jor.24261

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© 2019 The Authors. Journal of Orthopaedic Research® Published by Wiley Periodicals, Inc. on behalf of Orthopaedic Research Society.

This is an open access article under the terms of the http://creativecommons.org/licenses/by-nc-nd/4.0/ License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non‐commercial and no modifications or adaptations are made.

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Characterising platelet rich plasma products. Using a haematology analyser, the change in platelets (A), leukocytes (B), and final volume (C) from whole blood to CPRP (n = 11) and PRP (n = 11) were quantified. The increase or decrease of each cell type indicates the change from whole blood (red) to the paired platelet product (black). A paired t‐test was used to compare change in cell type before and after processing (**p < 0.01, ***p < 0.001, and ****p < 0.0001) while a Mann‐Whitney test was used to compare CPRP and PRP (# = p < 0.001, # # = p < 0.0001). Statistics could not be conducted on CPRP's volume analysis (C) due to matching differences between each sample. The photographs show the CPRP fraction product (D) and the PRP product (E).