Complement fixation test to 贝纳特氏立克次C

定义

The 补充 fixation test to Coxiella burnetii (贝纳特氏立克次C) is a blood test that checks for infection due to bacteria called 贝纳特氏立克次C，这导致 问发烧.

Alternative Names

问发烧 - 补充 fixation test; Coxiella burnetii - 补充 fixation test; 贝纳特氏立克次C - 补充 fixation test

How the Test is Performed

A blood sample is needed.

The sample is sent to a laboratory. There, a method called 补充 fixation is used to check if the body has produced substances called antibodies to a specific foreign substance (antigen), 在这种情况下, 贝纳特氏立克次C. Antibodies defend the body against bacteria, viruses, and fungi. If the antibodies are present, they stick, or "fix" themselves, to the antigen. This is why the test is called "fixation."

How to Prepare for the Test

No special preparation is necessary for this test.

How the Test Will Feel

When the needle is inserted to draw blood, some people feel moderate pain. Others feel only a prick or stinging. Afterward, there may be some throbbing or bruising. This soon goes away.

Why the Test is Performed

This test is done to detect 问发烧.

正常的结果

Absence of antibodies to 贝纳特氏立克次C 是正常的. It means you do not have 问发烧 now or in the past.

What Abnormal Results Mean

An abnormal result means you may have a current infection with 贝纳特氏立克次C, or that you have been exposed to the bacteria in the past. People with past exposure may have antibodies, even if they are not aware that they were exposed. Further testing may be needed to distinguish between current, 以前的, and long-term (chronic) infection.

During the early stage of an illness, few antibodies may be detected. Antibody production increases during the course of an infection. For this reason, this test may be repeated several weeks after the first test.

风险

There is little risk involved with having your blood taken. Veins and arteries vary in size from one person to another, and from one side of the body to the other. Taking blood from some people may be more difficult than from others.

Other risks associated with having blood drawn are slight, but may include:

• Excessive bleeding
• Fainting or feeling lightheaded
• Multiple punctures to locate veins
• Hematoma (blood accumulating under the skin)
• Infection (a slight risk any time the skin is broken)

参考文献。

Hartzell JD, Marrie TJ, Raoult D. Coxiella burnetii (问发烧). In: Bennett JE, Dolin R, Blaser MJ, eds. Mandell, Douglas, and Bennett's Principles and Practice of Infectious Diseases. 9日艾德. Philadelphia, PA: Elsevier; 2020:chap 188.

Olano JP, Walker DH. Rickettsiae and other related intracellular bacteria. In: McPherson RA, Pincus MR eds. Henry's Clinical Diagnosis and Management by Laboratory Methods. 24日艾德. Philadelphia, PA: Elsevier; 2022: chap 63.