Skip to content

Ureacsfscnc

Published: July 31, 2026Updated: August 16, 2026

脑脊液尿素测定是一种检查脑脊液中尿素浓度的实验室测试，常用于评估肾脏功能和蛋白质代谢状态。

Quick summary

{脑脊液尿素反映身体蛋白质代谢和肾脏排泄功能,通过腰椎穿刺采集脑脊液样本进行检测,结果异常可能提示肾脏疾病、脱水或其他代谢问题}

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
58831-9
Short code
CSF Urea
Synonyms
Urea CSF-sCnc
Category
chemistry
Sample
csf
Container
Sterile plain collection tube (red-top or clear container)
Units
not specified
Ref low
2.5
Ref high
7.1
Critical range
— – 100 not specified
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
Enzymatic spectrophotometric method (urease)
CPT
82009
SNOMED
1481004
Specimen volume
1-2 mL of CSF
Stability
Room temperature: 24 hours; Refrigerated (2-8°C): 72 hours; Frozen (-20°C): 1 week
Hemolysis max
50
Lipemia max
100
Icterus max
20
TAT
2–24 hours
Order
routine

这是什么测试？

脑脊液尿素测定是一种化学检测项目，用于测量脑脊液（脑和脊髓周围的透明液体）中尿素的浓度。尿素是人体蛋白质代谢的终产物，通常由肾脏排出体外。通过检测脑脊液中的尿素水平，医生可以了解肾脏的排泄功能以及体内蛋白质代谢的情况。

如何进行这项检查？

脑脊液样本需要通过腰椎穿刺（俗称"腰穿"）获取。在操作过程中，医生会在您的下背部插入一根细针，穿过椎骨间隙到达椎管，抽取少量脑脊液。整个过程通常需要10-20分钟，可能会有轻微的酸胀感。取样后，样本会被送往实验室进行尿素浓度检测。

检查前需要做什么准备？

检查前请告知医生您正在服用的所有药物，包括抗凝药物。医生可能会要求您在检查前停止服用某些药物。检查当天建议穿着宽松的衣服，以便于操作。腰椎穿刺后，需要平卧休息1-2小时，以减少头痛的风险。

Reference range

2.5-7.1 mmol/Lnot specified

Specimen: csf

No special preparation required

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Frequently asked questions

这项检查有什么风险吗？
腰椎穿刺是一种相对安全的操作，常见的不良反应包括局部疼痛和短暂性头痛，严重并发症如感染或出血非常罕见。医生会在操作前评估您的具体情况，确保检查的安全性。
检查结果多久能出来？
脑脊液尿素测定属于常规化学检测，一般在1-3个工作日内可获得结果。具体时间取决于实验室的工作安排。
检查前可以进食吗？
腰椎穿刺前通常可以正常进食和饮水。但如果您感到紧张或不适，请提前告知医护人员。
脑脊液检查和血液检查有什么不同？
脑脊液检查可以反映中枢神经系统的代谢状态，而血液检查反映的是全身情况。在某些情况下，脑脊液检查可以提供额外的诊断信息，帮助医生更准确地判断病情。
  1. 1
    Mayo Clinic - Lumbar Puncture (Spinal Tap)Source
  2. 2
    MedlinePlus - CSF AnalysisSource
  3. 3
    LOINC - Urea [Moles/volume] in Cerebral spinal fluidSource

Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.

This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy