Rapid detection of viable bacteria in whole blood for early sepsis diagnosis and suseptibility testing

• Sepsis is a serious medical condition characterized by a whole-body inflammatory state caused by infection. Here, we present a sepsis method for rapid detection of bacteria from whole blood in less than 5h, combining selective blood cell lysis and a sensitive colorimetric based detection method. Selective cell lysis buffer allows selective rupture of blood cells (5 min), while maintaining bacteria 100% viable. Viable bacteria metabolically reduce iron (III) complexes, initiating a photo-catalytic cascade toward Prussian Blue formation visible to the naked eye. The method is finally validated for antibiotic susceptibility testing.

Subject headings

MEDICIN OCH HÄLSOVETENSKAP  -- Medicinsk bioteknologi -- Medicinsk bioteknologi (hsv//swe)

MEDICAL AND HEALTH SCIENCES  -- Medical Biotechnology -- Medical Biotechnology (hsv//eng)

Keyword

bacteria

blood

colorimetric

E.coli

Prussian blue

Selective cell lysis

Sepsis

Publication and Content Type

ref (subject category)

kon (subject category)