I have no idea what this lab means

This week in clinical I took on three patients for the first time, yay! It was a crazy hectic day that gave me a better idea of how to manage my time and make better use of my time. Overall it was a great day. In the morning I was furiously scribbling 3 sets of labs for my last care plan of the semester (YAY!!!) and I wrote something that now makes no sense for me to interpret. On our care plans we have a space for "Other labs, x-rays, EKG's etc" where we can write down things that were not listed on our regular labs page. This is what I wrote: "Plt reaction 236" and then underneath (so a related value) "% inhibition 34 L", the L meaning 34 was a low value. I have NO idea what Plt means! It's not platelets because that is on our regular lab value page and I have different values for this patient. Does anyone know what this means? I am embarrassed to email my professor this question at the end of the semester, please help!!!