I ran qpcr and got strange results like inverted peak in melt curve, improper amplification curve. I repeated the experiment for optimization but everytime i got same error. Then i performed normal pcr and got correct band, however it didn't work in real time pcr. What may be the cause of this error? What should i do to get proper results. I am using gcc biotech sybr green master mix and quant studio 5 machine... machine is new and i am the first one who is using the machine in our lab. I have attached images here...please help me i m helpless...