Serum urea test Shankar-road

SERUM UREA TEST

DESCRIPTION – The blood urea nitrogen test, which is also called BUN or serum BUN test, measures how much of the waste product you have in your blood. If your levels are off the normal range, this could mean that either your kidneys or your liver may not be working properly

METHODOLOGY – quantitative spectrophotometry

TURN AROUND TIME – within 24 hours

PATIENT PREPARATION –

COLLECT – plasma separator or serum separator tube

SPECIMEN PREPARATION – allow specimen to clot completely at room temperature. Separate serum or plasma from cells within 2 hours of collection. Transport 1 ml of serum or plasma to transport tube

STORAGE/TRANSPORT TEMPERATURE – refrigerated

STABILITY – ambient: 1 week; refrigerated: 1 week; frozen: 1 year

UNACCEPTABLE CONDITIONS – specimens containing sodium fluoride

SPECIAL INSTRUCTIONS – clinical history is mandatory