03
Oct
Ana Test Results Range. Ratios are obtained by diluting a portion of the blood sample with saline. 3 0 5 9 u is positive. In healthy individuals the frequency of ana did not differ significantly across the 4 age subgroups spanning 20 60 years of age. Greater than or equal to 6 0 u is strongly positive.
However a test result ranging between 1 40 1 60 is considered to be negative and is not a cause of concern. Titers are expressed as ratios. The normal range of ana blood test varies from laboratory to laboratory. Usually doctors get highly concerned if the ana test results are more than 1 80. But having a positive result doesn t mean you have a disease. A person may have a negative result but still have lupus especially the disease is in the early stages.
Different connective tissue diseases are associated with a different frequency of ana positivity see the image below.
Usually doctors get highly concerned if the ana test results are more than 1 80. Antinuclear antibodies ana are a group of autoantibodies produced by a person s immune system when it fails to adequately distinguish between self and nonself the ana test detects these autoantibodies in the blood. But having a positive result doesn t mean you have a disease. What are the normal ana blood test ranges. Ratios are obtained by diluting a portion of the blood sample with saline. Ultimately the ana result must be interpreted in the specific context of an individual patient s symptoms underlying medical conditions and other test results.