High Quality Services & Fees

 

Contact us for services and fees not listed below.

 

Quality Control

Data quality is ensured through the use of appropriate internal and external standards.  The MALDI-TOF mass spectrometers are calibrated with external standards that vary depending on the analyte molecular weight.  This results in the best calibration for the most accurate mass assignments.  Samples that have been trypsin digested are internally recalibrated from observed trypsin autolysis fragments.  The electrospray mass spectrometers are calibrated using polyalanine which allows for even distribution of multiple mass peaks. A variety of search engines, for protein indentification from mass fingerprinting and for intrepretation of MS/MS spectra, are available each of which generates its own statistics.  The choice of database searching software to be applied is optional to investigators and discussion of this matter is encouraged with our technical support team.