e872a21d_NA_Test_Kit_Acceptable_Samples__These_are_the_ones_to_obtain_
[Excellent Samples] Paraffin Blocks Tissue $480.00 [These are the ones to obtain.] 
Paraffin block tissue sample works 50% of the time if the formalin used in preservation is kept to 10% or less and fixed in under 4 hours. A pathologist's sample normally works and a coroner's sample frequently fails.
Home DNA Test Kit Acceptable Samples
These are the ones to obtain.