Sorted By Test Name - Mayo Medical Laboratories

BARRP
84440
Regional lymphadenopathy, which follows, is the predominant clinical feature of CSD. Skin testing has
been used in the past for CSD, but no skin test has been licensed for routine use. Trench fever, which was
a problem during World War I and World War II, is characterized by a relapsing fever and severe pain in
the shins. Interest in Bartonella quintana and Bartonella henselae has recently increased since its presence
in AIDS patients and transplant patients has been documented. PH and febrile bacteremia syndrome are
both syndromes that have afflicted patients with AIDS or those patients that are immunocompromised.
While trench fever and CSD are usually self-limiting illnesses, the other Bartonella-associated diseases
can be life-threatening.
Useful For: Rapid diagnosis of Bartonella infection, especially in the context of a cat scratch or
histopathology showing typical features of stellate microabscesses and/or positive Warthin-Starry stain
Interpretation: A positive Immunoflourescence assay (IFA) IgM (titer >1:20) suggests a current
infection with either Bartonella henselae or Barteonella quintana. A positive IgG (titer >1:128) suggests a
current or previous infection. Increases in IgG titers in serial specimens would indicate an active infection.
Normal serum specimens usually have an IgG titer of or = 1:256. IgM titers from normal serum were found to be or = 1:20 have not been
seen in the normal population. Culture should also be considered, but this may not be an optimal method
due to slow growth and fastidious nature of the organism.
Reference Values:
Bartonella henselae
IgG: