I am 24 years old girl. I complete my urine routine and microscopic examination 3 times in 3 different lab. First and second report I found in albumin trace. And there is no micro albumin portion. But third report I found in albumin is nill but there is micro albumin portion. And micro albumin is normal. What is the difference between albumin and micro albumin. My serum creatinine is 0.7. My kidneys are well?