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Abiotropdefectidnaspecqlnaaprobe

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

这是一项分子检测技术,用于检测血清样本中是否存在Abiotrophia defectiva细菌的DNA,以诊断相关感染性疾病。

Quick summary

{"Abiotrophia defectiva是一种可引起心内膜炎、菌血症等严重感染的细菌",该检测采用核酸扩增技术(NAA),可直接检测细菌DNA,灵敏度高,样本类型为血清,常用于辅助诊断感染性心内膜炎或其他深部感染,阳性结果提示可能存在该细菌感染,需结合临床症状综合判断,此检测可帮助医生制定精准的抗感染治疗方案}

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

Key facts at a glance

LOINC
105627-4
Short code
ABDEF
Synonyms
Abiotrop defecti DNA Spec Ql NAA+probe
Category
chemistry
Sample
serum
Container
Serum separator tube (SST) or sterile serum collection tube
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
≥ 0 years
Method
probe-amp-tar
CPT
87625
SNOMED
122442009
Specimen volume
1.0 - 2.0 mL of serum
Stability
Room temperature: 24 hours; Refrigerated (2-8°C): 72 hours; Frozen (-20°C or below): 30 days. Avoid repeated freeze-thaw cycles.
Hemolysis max
500
Lipemia max
1000
Icterus max
500
TAT
24–72 hours
Order
routine

什么是Abiotrophia defectiva?

Abiotrophia defectiva(原名营养变异型链球菌)是一种革兰阳性细菌,属于链球菌科。这种细菌生长需要特殊的营养条件,通常需要维生素B6(吡哆醇)或硫醇类化合物。它是一种条件致病菌,可在人体引起多种感染,最常见的是感染性心内膜炎,也可引起菌血症、关节炎、骨髓炎等。

这项检测是什么?

Abiotrophia defectiva DNA检测是一种分子诊断技术,采用核酸扩增(NAA)与探针检测相结合的方法。它能够检测血清样本中是否存在Abiotrophia defectiva细菌的遗传物质(DNA)。与传统的细菌培养方法相比,这种分子检测技术具有更高的灵敏度,且检测速度更快,尤其适用于难以培养或需要快速诊断的病原体。

为什么需要这项检测?

医生可能会建议您进行这项检测如果您有发热、心脏杂音、其他心内膜炎症状,或疑似菌血症。Abiotrophia defectiva是感染性心内膜炎的常见病原体之一,尤其常见于有心脏瓣膜疾病或免疫功能低下的患者。该检测可帮助医生快速识别病原体,从而制定更精准的抗生素治疗方案。

检测结果如何解读?

检测结果分为阳性和阴性。阳性结果表明在您的血清样本中检测到Abiotrophia defectiva的DNA,提示可能存在当前感染。阴性结果表明未检测到该细菌的DNA,但这并不能完全排除感染的可能性,因为感染可能发生在检测范围之外的其他部位,或细菌载量低于检测限。结果需由医生结合您的临床症状、体征及其他检查结果进行综合判断。

Reference range

Not detected - The absence of Abiotrophia defectiva DNA in the tested specimenN/A

Specimen: serum

No special preparation required. Inform the patient that this test detects bacterial DNA. Standard venipuncture precautions apply. Inform laboratory of any recent antibiotic therapy as this may affect results.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Frequently asked questions

这项检测需要空腹吗?
血清检测通常不需要空腹。但为了确保检测结果的准确性,请遵循医生或检验人员的具体指导。检测前应告知医生您目前使用的所有药物,包括抗生素。
检测结果阳性是否意味着一定患有感染?
检测结果阳性高度提示存在Abiotrophia defectiva感染,但需结合临床症状、体征及其他检查结果综合判断。医生会评估您的具体情况来确定诊断并制定治疗方案。
这项检测有什么优势?
该检测采用核酸扩增技术,具有高灵敏度和高特异性。与传统细菌培养相比,它检测速度更快,灵敏度更高,尤其适用于难以培养的病原体或已使用抗生素的患者。
如果结果是阴性怎么办?
阴性结果提示未检测到Abiotrophia defectiva DNA,但这不能完全排除感染。可能需要结合其他检测方法(如血培养、其他分子检测)或复查以明确诊断。请遵循医生的建议进行进一步评估。
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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