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If you are talking about three substances that are normally found in blood but not in urine, they are leukocytes, erythrocytes and glucose.
hemoglobin
The reason to refrigerate urine after collecting a sample is to avoid bacteria from forming in it. If a sample of urine will be taken to a lab within an hour of collecting it, then it does not need refrigerated.
Urine is normally shightly acid in the fasting state... Neutral of somewhat alkaline for an hour or so following a meal. There is nothing wrong with those results...
If properly sealed and stored, urine samples are good for testing up to 24 hours after the sample given. The urine sample should be in a sterile container within a sealed plastic bag and stored in a refrigerator.
If you are talking about three substances that are normally found in blood but not in urine, they are leukocytes, erythrocytes and glucose.
hemoglobin
Free fat detected in a mid stream urine sample just simply means that there was fat found in the urine sample. Free fat is just the term used when referring to free globules of fat in urine.
Uremia
Creatinine is normally found in urine. Blood proteins, red blood cells, and hemoglobin are all abnormal findings. White blood cells would indicate an infection.
it is abnormal and high and show kidney dis.
Strep infection is not diagnosed from a urine sample.
It means your urine contains ketones (acetone is a ketone). Ketones aren't normally found in urine, and are a sign of diabetes.
This is to preserve the urine sample until its tested.
There are single-sample tests and split-sample tests. If you've got a split-sample test, the second half of the sample goes into the freezer for six months regardless. For single-sample and the other part of a split-sample test, they retain the sample if it tests positive, but if it tests negative they normally dump it.
It is very common for a person who is menstruating to contaminate a urine sample. Of course, contaminated urine samples are very common in general.
Both will show in a urine sample if tests are done to look for those drugs.