Does anyone know anything about MICROALBUMIN?

I had blood work done on thursday. they called with the results at noon today. My level is 4.2 and normal is 0 - 2.8. everything ive found online is saying early stages of kidney failure/diease. Im so confused. Please any help ,anything you can tell me about this would be appreactied (SP). Im scared to death ,my mom died from kidney failure 10 yrs ago. The dr is putting me on Lisinopril, and having it retested in 3 months. Also online it says that the test is usually done with a 24 hr catch. Mine wasnt done like that it was what they call a spot check or something which means done anytime. I had it done at 230 pm. So is it possiable that it could be even higher. Thanks eveyone for any answers.                                               Melissa

A microalbumin urine test detects the presence of the protein albumin in urine. In a properly functioning body, albumin is not normally present in urine because it is filtered from the bloodstream by the kidneys. When the kidneys are not working properly albumin can leak into the urine leading to a condition called Microalbuminuria. How is it used?

The random microalbumin test or microalbumin/creatinine ratio is frequently ordered as a screening test on patients with chronic conditions, such as diabetes and hypertension, that put them at an increased risk of developing kidney failure. Studies have shown that identifying the very early stages of kidney disease (microalbuminuria) helps patients and doctors adjust treatment. With better control of diabetes and hypertension, the progression of diabetic kidney disease can be slowed or prevented.

A timed microalbumin test (4 hour or overnight) may be ordered as an alternative screening tool. If significant amounts of microalbumin are detected with these screening tests, they may be confirmed with a 24-hour microalbumin test.

What does the test result mean? NOTE: A standard reference range is not available for this test. Because reference values are dependent on many factors, including patient age, gender, sample population, and test method, numeric test results have different meanings in different labs. Your lab report should include the specific reference range for your test. Lab Tests Online strongly recommends that you discuss your test results with your doctor. For more information on reference ranges, please read Reference Ranges and What They Mean. Moderately increased microalbumin levels in urine indicate that a person is in one of the very early phases of developing kidney disease. Very high levels are an indication that kidney disease is present in a more severe form. Normal levels are an indication that kidney function is normal.  

Is there anything else I should know? Recently, studies have shown that in Type 2 diabetics, an abnormal microalbumin result indicates an increased risk of developing cardiovascular disease (CVD).

I think im going to try for a second opinion, just to be sure.thank you for replying,