One of the basic predictions of softly broken supersymmetry is the  
identity of gauge couplings and the corresponding Yukawa couplings  
between the supersymmetric particles. If the LHC should discover  
new particles with a spectrum and decay structure as expected from  
supersymmetry, it will be crucial to test these coupling relations.  
While the SUSY-Yukawa couplings of the electroweak sector can be  
probed precisely at an e+e- collider, a similar analysis for the  
SUSY-QCD sector is much more demanding. Here I will present methods  
for how these couplings could be extracted from LHC data.