Culture Aerobic Blood (Automated), Adult

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The Culture Aerobic Blood (Automated), Adult test detects and identifies the presence of aerobic microorganisms in the blood of adults (above 12 years of age). It helps diagnose bacterial infections of the blood (bacteremia), sepsis, and other infections that can become fatal if not timely treated. On identification of the organism, antibiotic susceptibilities are performed to aid in the selection of appropriate antibiotics for treatment.

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Understanding Culture Aerobic Blood (Automated), Adult

Bacteremia or infections of the blood may be primary or occur secondary to infections at other sites of the body, such as lungs, urinary tract, skin, etc., medical procedures, or due to invasive devices such as catheters. The Culture Aerobic Blood (Automated), Adult test identifies the aerobic microorganisms (those that need oxygen for survival) that cause bacteremia or other severe infections. This helps the doctor select appropriate antibiotics to optimize treatment outcomes and minimize the development of antibiotic resistance.

The doctor may suggest this test if you experience symptoms suggestive of bacteremia, such as fever, chills, rapid heart rate, low blood pressure, nausea, vomiting, etc. The Culture Aerobic Blood (Automated), Adult test employs rapid automated cultures, which can identify the organisms earlier and with increased sensitivity compared to conventional culture.

No special preparation is needed for this test. However, inform the doctor about all the medications the child may be taking. This is because certain medications, such as antibiotics, can interfere with the test results and lead to false negatives if taken before the test. Your doctor may ask you to temporarily discontinue these medications to ensure accurate results.

A preliminary report is available after 24 hours of incubation of the blood sample in the laboratory, while the final report is available after 5 days. The preliminary report shows whether any micro-organisms have been detected in the blood sample. If growth is detected, early information about the microorganism and antibiotic susceptibility may also be provided. The final report contains confirmed and complete results.

Test result ranges are approximate and may differ slightly between labs. Talk to your doctor about your specific test results. Based on these, the doctor analyzes which medications are best for treating the present condition and whether more testing or procedures are necessary to ensure effective therapy.

What does Culture Aerobic Blood (Automated), Adult measure?

The Culture Aerobic Blood (Automated), Adult test is used to detect micro-organisms in the bloodstream that can grow in oxygen-rich conditions and may cause serious blood infections. Severe infection may lead to sepsis, which is a life-threatening emergency that needs immediate medical attention. Identifying the right cause of infection makes initiating treatment and formulating an effective treatment plan easier.

The Culture Aerobic Blood (Automated), Adult is a simple test in which the blood sample is placed in a special container designed to encourage the growth of aerobic bacteria that require oxygen for their survival. If test results are positive, the infection-causing bacteria are identified, and an antibiotic susceptibility test may be conducted to determine which antibiotics would be effective for treatment.

A preliminary (interim) report is available after 24 hours of incubation in the laboratory. This report indicates whether any micro-organisms have been detected in the blood sample. If microbial growth is observed, additional testing is performed to identify the microorganism and determine which antibiotics may be effective against it. These results may become available in subsequent updates and are included in the final report.

The antibiotic testing result may range from resistant (antibiotic unlikely to be effective) to sensitive (antibiotic is likely to work). Some reports may also include Intermediate (I) or Susceptible Dose-Dependent (SDD) categories; where-in your physician may decide on the antibiotic to be prescribed.

Because bloodstream infections can progress rapidly, the interim report can help healthcare providers assess the need for early treatment while awaiting complete results. The final report is generated after 5 days of incubation, allowing detection of slow-growing microorganisms that may not be identified within the first 24 hours. It also helps confirm the absence of microbial growth when no pathogens are detected.

Together, these findings help healthcare providers diagnose bloodstream infections and make informed treatment decisions.

Test Information is reviewed by: Dr. Swati Gupta (Anand), MD Lab Medicine, MBBS and written by Dr. Lipika Khurana, BDS, PGDHHM . The test details are for information purpose only. Consult a doctor before taking any test. Last updated on: 8th Sep 2026

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Culture Aerobic Blood (Automated), Adult test price for other cities

Price in	New Delhi	Rs. 1039
Price in	Bangalore	Rs. 849
Price in	Noida	Rs. 1249
Price in	Mumbai	Rs. 1039
Price in	Kolkata	Rs. 1089

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FAQs related to Culture Aerobic Blood (Automated), Adult

Why is the Culture Aerobic Blood (Automated), Adult test important?

The Culture Aerobic Blood (Automated), Adult test is important in identifying the presence of bacteria as well as guiding which antibiotics should be used for treatment. This helps in providing targeted and effective treatment.

What does aerobic mean in the context of bacterial culture?

Aerobic means that bacteria grow in the presence of oxygen. Most bacteria that infect humans are aerobic.

What are the risks associated with this test?

There are minimal risks associated with this test. If a blood sample is taken, there might be slight pain or bruising at the site of the needle prick. Talk to your doctor if these do not resolve after some time or bother you.

What factors might affect the level of bacteria in the blood samples?

Factors might include whether or not an infection is present, recent use of antibiotics, and the sample collection time (close to episode of fever) and volume of blood collected.

What are the signs and symptoms of sepsis?

The signs and symptoms of sepsis include chills, fever, nausea, rapid breathing, rapid heartbeat, confusion, and decreased frequency of urination. In case of severe infection, the signs and symptoms include the occurrence of inflammation throughout the body, the formation of many tiny blood clots in small blood vessels, a drop in blood pressure, and failure of one or more organs.

What does a negative culture aerobic blood test result mean?

A negative result does not always mean that the person is not infected. There are some microbes/pathogens which take time to grow in the blood culture medium. In case of viral infection, additional tests are advised as viruses cannot be detected using a blood culture medium. Additionally, false negative results can be obtained in case of patients already on antibiotics.

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