Hello ,
Thanks for posting your query.
When the body breaks down a muscle component called creatine, a waste product called creatinine forms. In a healthy person, the kidneys remove the creatinine from the bloodstream and excrete it in the urine.
The normal amount of creatinine in the urine ranges from 500 to 2,000mg per day. The normal amount for a person varies based on his lean muscle mass and age. Normal ranges also differ slightly from one laboratory to the next because of the different equipment and testing methods used.
Usually females have low levels of creatinine due to decreased muscle mass and especially vegetarians have even lower levels.
Low creatinine levels in urine also indicate damage to the kidney. The damage can be caused due to a infection, shock, low flow of blood to the kidneys or urinary tract blockage.
However urine creatinine itself is not diagnostic of any such disorder.If urine creatinine is low and blood creatinine is high then it is more suggestive of a renal dysfunction.
There are many other tests to assess kidney function like serum creatinine, blood urea nitrogen, creatinine clearance ratio, serum electrolytes all of which may help in assessing the renal function in a better way.
Since you are having microscopic hematuria which is a sign of kidney problem, its advisable you consult a nephrologist for further evaluation and investigation.If necessary the doctor may also order renal scans or imaging to find the cause of the hematuria.
Please do not panic as I do not mean that you are suffering from any of the above mentioned problems.All I am saying is that its better to be safe by getting evaluated and ruling out any problem if further tests indicate the need.
Hope I have answered your query.
Regards

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