Innovation in light transmission aggregometry (LTA): Measurement without autologous PPP
- LTA determines platelet aggregation in platelet-rich plasma (PRP) by assessing the change in light transmission in response to added specific platelet agonists.
- Under constant stirring, agonists, through the activation of specific receptors, can prompt platelet granule secretion, activation, and aggregation.
- The reactivity pattern with various agonists acting through different receptors and signalling pathways helps to establish a diagnosis.
- However, limitations of LTA are obvious: it requires long time and large volumes of blood for the preparation of PRP and autologous platelet-poor plasma (PPP), which is necessary as reference for calibrating the measurement zero.
- A novel feature is the ability of ThromBash XRA to measure LTA in PRP not only against autologous PPP but also against a virtual reference.
Retrospectively calculation of measurements
- For validation in your laboratory, all results can be subsequently calculated in relation to the different references, PPP / VPPP.
- All results obtained against autologous PPP can be recalculated retrospectively with VPPP based on PRP data stored in the database.
- For all results obtained with VPPP, the autologous PPP can be measured retrospectively, the results of the PRP data stored in the database are recalculated using this autologous PPP as reference.