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real-time thresholds - purpose? - (Aug/23/2005 )

What is the purpose of the threshold on df/dt vs temperature graphs for melting curve analysis?

I have samples that produce the right peaks but underneath the threshold - the computer programme will allow me to move the threshold to include the peaks in analysis - so hence what is the point in it?
Some text appears to say you should discard all peaks below threshold - but if they are so obviously right?????

Any help would be very gratefully recieved

Edwina xx

-edwina-

QUOTE (edwina @ Aug 23 2005, 04:15 PM)
What is the purpose of the threshold on df/dt vs temperature graphs for melting curve analysis?

I have samples that produce the right peaks but underneath the threshold - the computer programme will allow me to move the threshold to include the peaks in analysis - so hence what is the point in it?
Some text appears to say you should discard all peaks below threshold - but if they are so obviously right?????

Any help would be very gratefully recieved

Edwina xx

Incase anyones interested - the thresholds for melting curves whenlooking for the presence of a genotype and not doing any quantitation - it is acceptable to lower the theshold to below zero in order to analyse peaks.

-edwina-