The File Extensions Database

.FSA File Extension

  • Developer by: Applied Biosystems
  • Category: Data Files

What is an .FSA file?

.FSA is Fragment Analysis Data File

An FSA file is a fragment analysis data file created by DNA sequencers and analyzers, such as the 3500 and 3130 Genetic Analyzers. It contains electropherogram records of amplified fragments along with the model and machine used to collect the data and the start and stop time of the run. FSA files are saved in the proprietary ABIF file format where each element of data is associated with a tag similar to key-value pairs.

FSA files are created to store fragment data acquired by data collection software during an electrophoresis run (laboratory technique used to separate and analyze macromolecules based on size). The data is used to determine DNA sequence genotypes. If you don't work or study in a DNA-related scientific field you most likely will never come across an FSA file.

If you do find an FSA file and need to open it you can choose from several fragment analysis programs, such as Peak Scanner Software. These programs can be used to size, display, edit, and print FSA files. The applications process the raw data in the FSA file with algorithms and displays the data according to user-specified analysis settings. If you want to convert the FSA file to a more common image format you can use the FSA2PS program to convert the data to PostScript images.

FSA files collected by Applied Biosystems applications will most likely be located in the following directory:

E:\AppliedBiosystems\UDC\Data Collection\Data\[instrument type]\[instrumentname]\

Programs that open Fragment Analysis Data File
Peak Scanner Software

How to solve problems with FSA files

  • Associate the FSA file extension with the correct application. On :
    Windows: Right click on any FSA file and then click "Open with" > "Choose another app". Now select another program and check the box "Always use this app to open *.FSA files". Mac: Right click (or Ctrl-click) the FSA file, then click "Open with" > "Other...". Then choose another program and check the "Always Open With" box. Linux: Right click on the file, and select "Open with" and choose another program. iPhone: Tap the file. If you do not see an app to open the file, then tap Share "Share" and choose an app. Alternatively, save the file. Then open the Files app Files app. There long-press on the file, then release your finger. You will see a black menu bar. Then tap "Share" and select an app. Android: Tap the Settings icon on your smartphone, then tap on the Apps section. There tap the Options icon in the top right-hand corner of the screen to change the default apps.
  • Update your software that should actually open .FSA is Fragment Analysis Data File. Because only the current version supports the latest FSA file format. Search, therefore, e.g. on the Applied Biosystems manufacturer website after an available .FSA is Fragment Analysis Data File update.
  • To make sure that your FSA file is not corrupted or virus-infected, get the file again and scan it with antivirus software.