Urea Nitrogen, Urine

Sample type

• 24 hour Urine

• Random Urine

Uses:-

• This test is mainly used to check a person’s protein balance and the amount of food protein needed by severely ill people.

• It is also used to determine how much protein a person takes in.

• determine if you have kidney disease.

Precautions:-

• No special precautions but if the sample was 24 hour Urine there are some instructions the patient should know it.

• 24-hour urine sample collection instructions

wash hands carefully before and after collecting each sample

On the first day of collection, you won’t collect a sample when you first urinate that morning. Note the time, and then collect all urine for the remaining 24 hours .

Samples need to be refrigerated during the 24-hour period.

Avoid soap , water or any contamination to touch the sample.

Starting and ending times of collection are required.

Label your name, date and time of collection on the container and return it as instructed

Interfering factors:-

• Levels increase with age and protein content in the diet

• Administration of GH, testosterone, and insulin decrease the urine levels.

• malnutrition and kidney diseases

Pre- analytical errors

1 . Unlabeled ,mislabeled specimen or Contamination urine

The Corrective action

1. Reject the sample and another one is requested

Post analytical errors

1 . Write wrong name on the report

2 . Send wrong results to the patient

The Corrective action

1 . make sure that the name and all data are right.

2 . Communicate to the patient and apologize for this mistake and sent the right report to him.

Reference range:-

24–hour urine: 2–20 g/day

Random urine

Male: 2.8–9.8 g/g creatinine

Female: 3.1–11.6 g/g creatinine

Normal value ranges may vary slightly among different laboratories