i have been trying to isolate DNA from mice blood from a long time using different kits. Presently i am using QIAGEN kit to isolate DNA . Initially i was getting nothing on the gel but after troubleshooting ( like decreasing dilution of blood, avoiding vortexing,less pipetting during gel load ) i am now getting some yeild and less shearing. However i want a clear sharp band and want to improve my yeild further.
Hence please suggest me possible ways. I have to get good amount of healthy DNA so that i can process it further for PCR .