Blood culture

Skip Navigation

A blood culture is a test on a sample of blood to check for bacteria, a fungus, or sometimes viruses in the bloodstream. The test may be done if a doctor suspects a blood infection. A blood culture may help determine the specific organism causing an infection and select the appropriate antibiotic to treat it.

Usually a blood culture is needed only if a person is severely ill. Blood cultures are commonly done when a person has a high fever or shaking chills that mean there may be an infection of the blood.

It usually takes between 1 and 3 days to get the results of a blood culture. But a blood culture to look for a fungus or virus can take weeks.




La Enciclopedia de salud contiene información general de salud. No todos los tratamientos o servicios descritos son beneficios cubiertos para los miembros de Kaiser Permanente ni se ofrecen como servicios de Kaiser Permanente. Para obtener una lista de beneficios cubiertos, consulte su Evidencia de cobertura o Descripción resumida del plan. Para los tratamientos recomendados, consulte con su proveedor de atención médica.