An unknown fluid was submitted to the laboratory. If you wish to know that it is a urine specimen, which of these parameters must be tested?
(1) creatinine
(2) urea
(3) uric acid
(4) glucose
(5) protein
1 only
1, 2, 3 and 4
1, 2 and 3
2 and 3
1 and 2
1, 2, 3, 4 and 5
3 and 5