Is there any possible way to take a DNA test without the need to draw blood in humans? Any information will be useful for me.
Yes, we don't have to use blood to extract DNA for testing. There are many resource we can use include: hair, buccal swabs and urine. And it seems hair can provide good quality of genome DNA.
Here is the paper you may interested: A Simple Method of Genomic DNA Extraction from Human Samples for PCR-RFLP Analysis