Thank you for your query at DoctorSpring.com
Even though every laboratory has their own reference ranges which they mention in the test report, but 0.06 is mostly negative in all laboratories.
Did they just inform you about the report or they have given it to you?
If they have you can upload it for me to review.
Can you also give me a little more information on why you got the test done? And what was the exposure?
Feel free to discuss further,