How can the father and baby have a paternity tests and the results are inconclusive?

Lisa R: How can the father and baby have a paternity tests and the results are inconclusive?
The father of my daughter took a dna paternity test without me and the results were inconclusive. Now the lab has requested my boyfriend’s father to come in and give a dna sample to clear this up.
The lab said that there was no problems with the sample. They said that the results were less than 85% and therefore need the paternal grandfather to come in for further testing. They also said that they looked at 15 different areas and tested the 15 areas 3 times and yielded the same response.

Answers and Views:

Answer by Katie J
It may not have been a good enough sample, or his dna may be to close to hers to decide if he is the father so by having his father come in you will find the genes that actually came from him.

Answer by plev21
I work for a paternity lab, there are many reasons why a test can be inconclusive, among them:

There was an insufficient amount of DNA taken at sample collection

Samples were contaminated at Collection or in the lab processing

This happens about 5% of the time

Answer by vvette917
Not sure, maybe the swabs were done incorrectly. He went to a lab and they swabbed his mouth and your daughter’s? I’ve had 2 done in my life, both times with a top notch known company and had results with no problems.