Creatinine >=20 help

I got a urinalysis done by my doc recently. He did not call me about any bad results, but I am curious about my creatinine. The ref range is >=20. What does that mean? My creatinine level in urine was 71.
Could that be an error? Because I feel fine and isn't this number high?
Thanks.

The reference level for creatinine in a male is below 1.2. For a female, it's below 1.

Yep. Reading comprehension is apparently not my strong suit. The reference numbers I quote were for blood test results and your number is from a urinalysis. Apples and oranges. My apologies.

Your test number is above the level normally associated with women. You should call the doc and ask about that number. There are a bunch of different things it could mean, most of them very benign conditions. But check for peace of mind.

Mary I hope this info helps

So What is Creatinine?
• Creatinine is a waste product of the major energy metabolite creatine.
• Normal creatinine serum blood levels are:
– 0.6 to 1.2 mg/dl in males (53 to 106 umol/L)
– 0.5 to 1.1 mg/dl in females (44 to 97 umol/L)
• Creatinine is usually found in higher quantities (within the blood) in young adults, and lesser quantities in the elderly.
• Those with one kidney will have higher than “normal” levels of creatinine circulating in their blood (roughly 1.8 mg/dl or 160 umol/L).
• Creatinine can be tested for via a blood sample or via a urine sample. On its own a blood sample is more accurate than a urine sample, though combining them together to form what is called a creatinine clearance test (both blood and urine) is the most accurate test.
• High creatinine levels occur due to any number of diseases that cause the kidneys to shut down, including dehydration, shock, congestive heart failure, and bladder outlet obstruction.
• There are no definitive symptoms that are caused by high creatinine levels, though the following could be possibly linked: fatigued, shortness of breath, feeling dehydrated, and confusion.