Certifying Scientist, LCMS General Supervisor. Comprehensive Pain Center Allentown. Job Title. Certifying Scientist/LCMS General Supervisor. for Physician Office Lab. Location. Allentown, PA. . We will prefer someone who has. Working knowledge of the liquid chromatography/mass spectrometry (LC/MS). Operating and troubleshooting LC MS instruments, doing quantitative analysis of urine specimens. Experience and expertise in sample accessioning, liqu...