Kenya Medical Laboratory Tests
Hepatitis B Ag Test in Kenya
Brief DescriptionThe test is used to detect presence of surface antigen for Hepatitis B virus in blood"," for patients with acute and chronic hepatitis B infections. Screening of pregnant women is recommended for neonate risk assessment.
SynonymsHBsAg"," HBV"," Hepatitis-associated Antigen"," Qualitative HBV surface antigen
Patient PreparationPatients taking biotin supplement are advised to abstain at least 72 hours to sample collection for more precise results.
Sample TypeSerum or plasma
Sample volume3 mL (minimum 1.5 mL)
Sample collection ContainerRed-top tube"," gel-barrier tube (preferred)"," or lavender-top (EDTA) tube
Sample collection instructionsIf sample is not collected in gel-barrier tube"," separated plasma or serum should be transferred to a plastic transport tube.
Sample storagestable at room temperature and refrigiration for two weeks.
Results Turnaround1-2 Days after receipt of samples
Diseases / Diagnostic IndicatorsSome people especially children may be asymptomatic. In acute infections"," jaundice"," dark urine"," extreme fatigue"," nausea"," vomiting and abdominal pain may be observed for several weeks"," while in some patients"," may experience liver failure and some cancer which can lead to death.