FCS Express has the ability to fit your data to many different types of equations.
Below you will find a table indicating the equation, the formula associated with it, and the parameters defined in FCS Express when a fit is performed.
Equation Name |
FCS Express Function Name |
Equation |
Variables |
Michaelis Menten |
MichMenten |
|
Vmax, Km |
TwoSiteBinding |
TwoSiteBinding |
Vmax, KM, Vmax2, KM2 |
|
Four Parameter Logistic (4PL) |
FourParmLogistic |
Imax, Imin, IC50, Hill |
|
Five Parameter Logistic (5PL) |
FiveParmLogistic |
Imax, Imin, IC50, Hill, Asym |
|
Boltzmann |
Boltzmann |
Bottom, Top, V50, Slope |
|
Exponential |
Exponential |
A, M, C |
|
Two Phase Exponential |
TwoPhaseExponential |
A, M, A2, M2, C |
|
Exponential Association |
ExpAssociation |
Ymax1, K1 |
|
Two Phase Exponential Association |
TwoPhaseExpAssociation |
Ymax1, K1, Ymax2, K2 |
|
Exponential Grow |
ExponentialGrow |
A, M, C |
|
Power |
Power |
A1, B1, K |
|
Power Series |
PowerSeries |
A1, B1, A2, B2, K |
|
Linear |
Linear |
m, b |
|
Parabolic |
Parabolic |
m, b, A2 |
|
Cubic |
Cubic |
m, B, A2, A3 |
|
Sine Wave |
SineWave |
Baseline, Amplitude, Frequency, Offset |
|
Gaussian |
Gaussian |
A, SD, xMed, K |
|
Sigmoidal |
Sigmoidal |
A, B, C |
|
Decreasing Sigmoidal |
SigmoidalDec |
A, B, C |