Complete Blood Count (CBC): What This Common Blood Test Measures and Why Your Doctor May Order It

What is this test? A complete blood count (CBC) is a routine blood test that measures the different cells in your blood, including red blood cells, white blood cells, hemoglobin, hematocrit, and platelets, helping your provider evaluate your overall health.

The Acinetobacter calcoaceticus-baumannii complex DNA test is a molecular diagnostic test that detects the genetic material (DNA) of Acinetobacter baumannii complex bacteria in your specimen. The test uses Nucleic Acid Amplification (NAA) with probe detection, which is a highly sensitive technique that can identify even small amounts of bacterial DNA. This test is performed on serum (blood) or other relevant specimens as ordered by your healthcare provider.

Why do I need this test? Your doctor may order a CBC as part of a routine checkup, to investigate symptoms such as fatigue, weakness, fever, easy bruising, or unexplained bleeding, or to monitor an ongoing condition like anemia, infection, or a blood disorder.

Your healthcare provider may order this test if you have symptoms of an infection and there is concern that Acinetobacter baumannii complex may be the cause. This bacteria is a common cause of healthcare-associated infections, particularly in patients in intensive care units, those with open wounds, or people with weakened immune systems. Early detection helps guide appropriate treatment with the right antibiotics.

How is the test performed? A healthcare professional will draw a small sample of blood, usually from a vein in your arm, and send it to a laboratory for analysis; the procedure takes only a few minutes, and fasting is generally not required for this test.

A healthcare professional will collect a blood sample from a vein in your arm (for serum specimens) or collect another appropriate specimen based on your symptoms. The specimen is then sent to a laboratory where technicians use specialized equipment to extract and amplify any bacterial DNA present, then detect it using probe technology. The entire process is highly accurate and can detect even small quantities of the bacteria.

What do the results mean? Your results show whether your red blood cell, white blood cell, and platelet counts fall within normal ranges; abnormal values can suggest conditions such as anemia, infection, inflammation, clotting problems, or other disorders that may require follow-up testing.

A 'Detected' or positive result means that Acinetobacter baumannii complex DNA was found in your specimen, indicating you likely have an infection caused by this bacteria. An 'Not Detected' or negative result means no DNA from this bacteria was found in your specimen. However, a negative result does not completely rule out infection—your healthcare provider will interpret the results together with your symptoms, other test results, and clinical examination.

Are there any risks? The risks are very low; you may feel a brief sting when the needle enters your skin, and mild soreness or a small bruise at the puncture site can occur, while serious complications such as infection or heavy bleeding are rare.

The risks associated with this test are minimal and are related to the blood draw, which may include slight pain, bruising, or bleeding at the puncture site, and in rare cases, infection. These risks are generally minor and resolve quickly.