Serum lipid profiling - injection mode / washing conditions

<p> Hi,</p><p></p><p>There have been a couple of recent Waters application notes published on serum lipid profiling:</p><p></p><p>*M. Ritchie, E. Goh "Rapid lipid profiling of serum by reverse phase uplc-tandem quadrupole MS"</p><p>*G. Isaac, S. McDonald, G. Astarita "Lipid separation using UPLC with Charge Surface Hybrid Technology"</p><p></p><p>Injection mode / wash conditions are not specified in the experimental sections of the notes. I was wondering if anybody has looked at optimizing the best injection mode / wash conditions for this method or similar.</p><p></p><p>Regards,</p><p></p><p>Jonathan Barr</p>