The Fractional Excretion of Urea (FEUrea) determines the cause of renal failure. Similar to the FENa, but can be used on patients on diuretics.

Urea, also called carbamide (because it is a diamide of carbonic acid), is an organic compound with chemical formula CO (NH2)2. This amide has two amino groups (– NH2) joined by a carbonyl functional group (–C (=O)–). It is thus the simplest amide of carbamic acid. [6]

Urea is a carbonyl group with two C-bound amine groups. The commercially available fertilizer has an analysis of 46-0-0 (N-P2O5-K2O). It has a role as a flour treatment agent, a human metabolite, a Daphnia magna metabolite, a Saccharomyces cerevisiae metabolite, an Escherichia coli metabolite, a mouse metabolite and a fertilizer.

尿素（Urea），又称脲、碳酰胺，化学式是CH4N2O或CO (NH2)2，是一种白色晶体，无味无臭，易溶于水、 乙醇 和苯，微溶于乙醚、氯仿。 尿素是最简单的有机化合物之一，是哺乳动物和某些鱼类体内蛋白质代谢分解的主要含氮终产物，可以用作化肥、动物饲料、炸药、胶水 稳定剂 和化工原料等。 因为在人尿中含有这种物质，所以取名尿素。 作为一种中性肥料，尿素适用于各种土壤和植物。 它易保存，使用方便，对土壤的破坏作用小，是使用量较大的一种化学氮肥。 …

2025年2月20日 · urea, the diamide of carbonic acid. Its formula is H 2 NCONH 2. Urea has important uses as a fertilizer and feed supplement, as well as a starting material for the manufacture of plastics and drugs. It is a colourless, crystalline substance that melts at 132.7° C (271° F) and decomposes before boiling.

Calculate Fractional Excretion of Urea (FEUrea), a valuable diagnostic tool for healthcare professionals, aiding in renal function assessment.

2023年8月25日 · Causes of a raised serum urea (uraemia) include: Renal dysfunction: decreased excretion of urea into the urine. Dehydration: urea rises quickly in dehydration, even in the presence of normally functioning kidneys.

A fractional excretion of urea (FE Urea) of < 35% is suggestive of pre-renal azotemia. Unlike when measuring of the fractional excretion of sodium, (FE Na), it can be used even when patients are taking diuretics. Fractional Exceretion of Urea = Uur X Pcreat / Ucreat X Pur · 100% Where:

AE: Appearance energy: C p,solid: Constant pressure heat capacity of solid: S° solid,1 bar Entropy of solid at standard conditions (1 bar) T fus: Fusion (melting) point: T triple: Triple point temperature

2024年4月22日 · Urea is a solid of molecular formula H 2 NCONH 2 with a molar mass (60.024 g/mol). It has a density under normal conditions of 0.74 g/cm 3. It has a melting point (mp = 132.7 ºC).