The blood urea nitrogen or BUN is a blood test that measures the amount of urea nitrogen in the bloodstream. It reflects how well your kidneys are. When a person is dehydrated, false results might be obtained as BUN levels increase when blood is concentrated. Elevated BUN levels indicate dehydration, excessive protein intake and impaired renal function. Low BUN levels indicate over hydration, liver damage and malnutrition.
The Urease Test Determines whether or not a microorganism can hydrolyze urea, a process that releases ammonia and produces a color change in pH indicators Urease hydrolyzes urea to form ammonia, water and CO2. Christensen urea agar is preferred In agar form, the slant is inoculated, not stabbed Phenol red is the pH indicator The resulting alkaline pH from hydrolysis of urea is indicated by a bright pink color
Umbilical stump bleeding is classic presentation for F13 deficiency (auto recessive). PT and PTT are totally normal since they do not involve the fibrin-cross linking step (just need to form the initial clot). 5M urea test.