My 13 yr old daughter got a white blood cell count of 3.6 come in yesterday and her uncle passed away at 18 with luekemia should we go do more tests n?

Rare rarely happens: There to my knowledge no family linkage for leukemia and a lowish white count as listed is often due to other common events ( although you didn't give much to go on).I think you need to get through this numbing period whatever way you can.Instead of more tests, a heartfelt discussion of your concern with the doc that ordered the test may be a better approach.If needed it would get done.