seronegative(redirected from seronegativity)
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showing negative results on serologic examination; showing a low level of antibody.
Lacking an antibody of a specific type in serum; used to mean absence of previous infection with a specific agent (for example, rubella virus), disappearance of antibodies after treatment of a disease (for example, syphilis), or absence of antibody usually found in a given syndrome (for example, rheumatoid arthritis without rheumatoid factor).
seronegative/se·ro·neg·a·tive/ (-neg´ah-tiv) showing negative results on serological examination; showing a lack of antibody.
Indicating a negative reaction to a serological blood test, especially one testing for the presence of antibodies.
Etymology: L, serum, whey, negare, to deny
a serological test with negative results.
seronegativeImmunology The lack of antibodies or other immune markers in serum that would indicate exposure to a particular organism or antigen; in an immunocompetent person, exposure to an antigen results in a seroconversion and the subject is said to then be seropositive. Cf Seropositive.
Lacking an antibody of a specific type in serum; denoting absence of prior infection with a specific agent, disappearance of antibodies after treatment of a disease, or absence of antibody usually found in a given syndrome.
Lacking an antibody of a specific type in serum.
n serologic evidence of the lack of an antibody of a specific type in the serum; diagnostically useful in ruling out Lyme disease, syphilis, human immunodeficiency virus (HIV), serum hepatitis B, and many other viral diseases.
showing a negative serum reaction; i.e. an animal with no detectable serum antibodies to a specified microorganism.