Complete Blood Count (CBC)

A complete blood count, or CBC, is a common blood test that measures the different cells in your blood, including red blood cells, white blood cells, and platelets. Doctors use it to check your overall health and to help detect a wide range of conditions, such as infections, anemia, and other blood disorders.

The Nucleolar ANA Pattern test is a specialized blood test that detects antinuclear antibodies (ANA) that show a nucleolar staining pattern under immunofluorescence microscopy. The nucleolus is a structure within the cell nucleus involved in ribosome production. When the immune system produces antibodies against these structures, it indicates an autoimmune response.

The test is performed by drawing a small sample of blood, usually from a vein in your arm. A healthcare provider will clean the area, place a band around your upper arm, and insert a thin needle to collect the blood into a tube. The sample is then sent to a laboratory for analysis, and the entire process typically takes only a few minutes.

A healthcare provider will draw a blood sample from a vein in your arm. The sample is then sent to a laboratory where it undergoes indirect immunofluorescence testing. Technicians examine the blood serum under a microscope after staining with fluorescent antibodies to identify the specific pattern of ANA staining. Results are reported as a titer (such as 1:40, 1:80, 1:160, etc.), with higher titers indicating stronger antibody presence.

Your results show the levels of each type of blood cell compared with normal reference ranges. Abnormal values may suggest an infection, inflammation, anemia, dehydration, or a clotting problem, but they do not point to one specific disease on their own. Your doctor will interpret the numbers together with your symptoms and medical history to decide whether further testing is needed.

A positive nucleolar ANA pattern means that antibodies targeting nucleolar proteins were detected in your blood. While a positive result suggests an autoimmune disease, it does not definitively diagnose a specific condition. The test result must be interpreted in context with your symptoms, physical examination, and other test results. Some healthy individuals, particularly older adults, may have low-level positive ANA results without any disease.

This test has very few risks. You may feel a quick sting or pinch when the needle goes in, and the site may be slightly sore or bruised for a day or two. Serious complications, such as excessive bleeding or infection at the puncture site, are rare. If you feel dizzy during or after the blood draw, tell the staff right away.

The risks associated with this test are minimal and similar to routine blood draws. You may experience slight pain, bruising, or dizziness. These side effects usually resolve quickly. There are no specific preparations needed before the test, such as fasting.