2mecitratecsfscnc

Published: August 9, 2026Updated: August 16, 2026

脑脊液2-甲基柠檬酸检测是一种帮助诊断某些代谢性疾病的实验室检查。

Quick summary

{2-甲基柠檬酸是体内代谢过程中产生的一种物质,脑脊液检测可以帮助发现潜在的代谢问题,此检查通常用于辅助诊断罕见的遗传性代谢疾病,检测结果需要医生结合其他信息综合判断,采样过程安全，由专业医护人员操作}

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

Key facts at a glance

LOINC: 50092-6
Short code: 2-MCIT CSF
Synonyms: 2Me-citrate CSF-sCnc
Category: chemistry
Sample: csf
Container: Sterile CSF collection tube (polypropylene or glass), typically no additive or sterile dry tube
Units: N/A
Ref low: 0
Ref high: 0.5
Critical range: — – 2 N/A
Fasting: false
Population: adult
Sex: all
Age range: ≥ 0 years
Method: Gas chromatography-mass spectrometry (GC-MS) or Liquid chromatography-tandem mass spectrometry (LC-MS/MS)
CPT: 83789 (Organic acids, quantitative, specimen: CSF)
SNOMED: 122575004 (2-Methylcitrate measurement) or 119288001 (Cerebrospinal fluid chemistry test)
Specimen volume: 0.5-1.0 mL of cerebrospinal fluid minimum; 1.5-2.0 mL recommended for comprehensive metabolic panel
Stability: Store at 2-8°C if analysis within 24-48 hours. For longer storage, freeze at -20°C or -80°C. Avoid repeated freeze-thaw cycles. Protect from light exposure.
Hemolysis max: 200
TAT: 48–168 hours
Order: routine

这是什么测试？

脑脊液2-甲基柠檬酸检测是一种测量脑脊液中2-甲基柠檬酸浓度的实验室检查。脑脊液是围绕大脑和脊髓的透明液体，可以反映神经系统的代谢状态。2-甲基柠檬酸是人体代谢过程中产生的一种化学物质，正常情况下会被身体分解处理。

为什么要进行这项检查？

医生可能会建议进行这项检查来帮助诊断某些代谢性疾病，如甲基丙二酸血症或其他有机酸血症。这些疾病会影响身体分解和处理某些营养物质的方式。当医生怀疑患者可能存在先天性代谢异常时，可能会使用这项检查来辅助诊断。

检查过程是怎样的？

脑脊液样本通过腰椎穿刺（腰穿）采集。操作过程中，患者通常侧卧或坐位，医生会在腰椎间隙穿刺，抽取少量脑脊液。采集的样本会被送往实验室进行分析。整个过程由经验丰富的医生操作，通常是安全的，可能会有轻微的不适感或短暂的刺痛感。

检查结果意味着什么？

脑脊液中2-甲基柠檬酸的正常浓度因实验室参考值而异。如果检测结果异常升高，可能提示存在代谢性疾病。然而，单一的检测结果不能单独确诊任何疾病，医生需要结合患者的症状、病史、其他检查结果等信息进行综合判断。

Reference range

Reference range: 0-0.5 micromoles per liter (μmol/L) or not detected. Elevated levels may indicate inherited metabolic disorders such as propionic acidemia or methylmalonic acidemia.N/A

Specimen: csf

No special preparation required. Collect CSF via lumbar puncture following standard aseptic technique. No fasting necessary. Inform patient of procedure risks and obtain informed consent.

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？

腰椎穿刺是一种常见的医疗操作，通常是安全的。少数患者可能在穿刺后出现轻微头痛、局部酸痛或轻微出血，严重并发症非常罕见。医生会在操作前评估患者的整体状况，确保检查的安全性。

检查前需要禁食或特殊准备吗？

通常不需要特殊准备。医生会告知您具体的注意事项。如果您正在服用任何药物，请务必告知医生，因为某些药物可能影响检测结果。

结果多久可以出来？

脑脊液代谢物检测通常需要送到专业实验室进行分析，可能需要几天到一周的时间才能得到结果。具体时间取决于实验室的工作流程。

如果结果异常该怎么办？

如果检测结果异常，医生会结合您的临床症状和其他检查结果进行综合评估。可能会建议进行进一步的专科检查或遗传学检测以明确诊断。请不要过于担心，及时与医生沟通了解后续步骤。

Sources

1
MedlinePlus - Spinal TapSource
2
Mayo Clinic - Lumbar PunctureSource

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

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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