Bacteriacathtipaerobecult
这是一项检测导管尖端是否存在细菌感染的实验室检查，用于诊断导管相关血流感染。
{用于检测导管尖端是否有细菌生长,帮助诊断导管相关感染,结果阳性可能需要更换导管或使用抗生素,采集样本为拔除的导管尖端,通常需要2-5天得出培养结果}
Key facts at a glance
- LOINC
- 90274-2
- Short code
- CATH TIP AEROBE
- Synonyms
- Bacteria Cath Tip Aerobe Cult
- Category
- chemistry
- Sample
- serum
- Container
- Sterile, leak-proof, screw-cap container; no preservative or transport medium required for immediate delivery. If delayed transport is anticipated, a small amount of sterile non-bacteriostatic saline or thioglycollate broth may be used to prevent drying.
- Units
- N/A
- Ref low
- 0
- Ref high
- 15
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- ≥ 0 years
- Method
- aerobic-culture
- CPT
- 87071
- SNOMED
- 399326006
- Specimen volume
- Distal 5 cm segment of catheter tip (approximately 2-3 cm if umbilical catheter). Ensure the tip is cut rather than pulled to preserve structural integrity.
- Stability
- Room temperature: ≤2 hours for optimal recovery; refrigerated (2-8°C): up to 24 hours acceptable; do not freeze. Prompt delivery to microbiology laboratory is critical to prevent organism overgrowth or death.
- Hemolysis max
- 500
- Lipemia max
- 1000
- Icterus max
- 500
- TAT
- 48–120 hours
- Order
- routine
这是什么测试？
导管尖端需氧菌培养是一种微生物学检测方法，用于检测从患者体内拔除的导管（如中心静脉导管）尖端是否有细菌生长。医生会将拔除的导管尖端送至实验室进行培养，以确定是否存在感染以及感染的细菌类型。
为什么需要做这项检查？
这项检查主要用于：1）诊断导管相关血流感染；2）指导抗生素治疗方案；3）评估导管感染的风险。当患者出现发热、寒战等感染症状且怀疑与导管相关时，医生可能会建议进行此项检查。
检查过程是怎样的？
检查时，医生会从患者体内拔除导管，并将导管的尖端（约5厘米）剪下，放入无菌容器中送检。实验室技术人员会将导管尖端接种到培养基上，在适宜的温度下培养，观察是否有细菌生长。如果发现细菌，会进一步进行鉴定和药敏试验。
检查结果如何解读？
结果通常分为阴性（无细菌生长）和阳性（有细菌生长）两种。阴性结果通常表示没有导管相关感染；阳性结果则提示存在导管相关感染，医生会根据培养出的细菌类型和药敏结果制定相应的治疗方案，可能包括抗生素治疗或更换导管。
Reference range
No growth of clinically significant aerobic bacteria (typically <15 CFU on semi-quantitative roll-plate method is considered insignificant for catheter tip cultures).N/A
No fasting required. The catheter tip should be collected aseptically upon removal; ensure the distal 5 cm of the catheter is submitted. Avoid contamination from skin flora during collection. Patient should not be on prolonged topical antiseptic at the catheter site immediately prior to removal unless clinically directed.
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？
检查前需要禁食或停药吗？
培养结果需要多长时间？
如果结果阳性该怎么办？
Sources
- 1
- 2
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This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
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.
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Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy