I'm sorry but I don't have the answer to your question. I am in the process of have blood maker testing done through Guardant. it's called the 360 test. This test will capture the DNA shed from tumors in the blood. It will provide a comprehensive overview of the genomics in both the primary tumor and metastatic sites. The test is used to detect gene mutations in circulating cell free DNA {cfDNA}. The hope is they will be able to identify the best form of treatments going forward. Hope this information may help. I certainly wish you all the best in your fight.

Let me update that post. Following a short chemo vacation (3 weeks) my CA19-9 numbers went up to over 536 after being in the normal range before chemo vacation. I also did have some growth in my lungs at this time but it turned out to be a benign nodule that was in response to difficulty breathing due to a slow gas leak we’ve had where we are living. I’m having a PET scan to recheck the “lesion” in the femur. The rising CA19-9 numbers could have been due to inflammation in my lungs since I had such difficulty breathing, but that’s my own guess. My CA19-9 numbers are once again in the normal range again and started to decrease once I resumed chemo after my chemo vacation back in late July. I also got some focused radiation (MRIdean) in October which might have also helped.