The Hepatitis B Rapid Screen Test is a test for the qualitative detection of the Hepatitis B Surface Antigen (HBsAg) in whole blood, as an aid in the diagnosis of Hepatitis B infection. Hepatitis B is an infection of the liver caused by the Hepatitis B virus (HBV). It is transmitted by infected blood and bodily fluids (e.g. semen, saliva) through sexual contact, sharing injection needles, and from mother to baby during childbirth. Symptoms of hepatitis B include: itchy skin, body aches, joint pains, fatigue, loss of appetite, nausea, vomiting, dark urine and jaundice (yellow colouration of skin and eyes). These appear after about 3 months from the point of infection and can last for weeks or even months.
- Do not use the test kit beyond the expiration date.
- Do not use the kit if the pouch is punctured or not well sealed.
- For in vitro use only. Do not swallow.
- All specimens from the body should be treated as potentially infectious.
- Contaminated blood may give incorrect test results.
- Discard after first use. The test cannot be used more than once.
- DISPOSAL: The used-device has the risk of infection. Please dispose all used contents properly.
HEPATITIS B RAPID SCREEN TEST CONTENTS
Each Kit Contains:
- Hepatitis B test card, individually foil pouched with a desiccant
- Plastic dropper
- Sample diluent
- Safety lancet
- Alcohol swab
- Package insert
Material Required But Not Provided:
STORAGE AND STABILITY
The kit must be stored between 4-30OC.
Do not open pouch until you are ready to test the sample.
ASSAY PROCEDURES FOR FINGER BLOOD
- Bring the Hepatitis B test card, sample diluent, alcohol swab, safety lancet and plastic dropper to room temperature.
- Take out the test card from the sealed pouch.
- To perform the test, follow the steps from picture 1 to picture 8.
ASSAY PROCEDURES AT CLINICS
- Bring all reagents and specimens to room temperature.
- Remove the hepatitis C test card from the foil pouch and place it on a clean and dry surface.
- Identify the test card for each specimen or control.
- For whole blood testing: Dispense one drop (30μl) of sample or control into the sample well on the card using the plastic dropper provided, then add one drop (50μl) of sample diluent into the same well. For serum/plasma: Dispense three to four drops (80-120 μl) of sample or control into the sample well on the card using the plastic dropper provided.
- Interpret the test result at 15 minutes. A positive result may be interpreted early, however read any negative at 15 minutes to ensure sample is negative and not a low concentration of Hepatitis B surface antigen. Do not interpret the result after 20 minutes.
It is recommended to run a known positive control and negative control in each performance to ensure the assay procedure.
READING THE TEST RESULTS
- Positive: Both purplish read test band and purplish read control band appear on the membrane. The lower the antibody concentration, the weaker the test band.
- Negative: Only the purplish red control band appears on the membrane. The absence of a test band indicates a negative result.
- Invalid: There should always be a purplish red control band in the control region regardless of test result. If control band is not seen, the test is considered invalid. Repeat the test using a new test device.
Note: It is normal to have a slightly lightened control band with very strong positive samples as long as it is distinctly visible.
Clinical studies have been carried out to determine the correlation of Hepatitis B Rapid Test to EIA and RIA tests:
The Hepatitis B Rapid Screen Test can detect HBsAg at concentration as low as 2.5ng/ml (including both ad and ay subtype).
Although the association between the presence of HBsAg and infection is strong, available methods for HBsAg detection are not sensitive enough to detect all potentially infectious units of blood or possible hepatitis infections.
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- Wolters G, Kuipers L, Kacaki J, and Schuurs A, Solid-phase enzyme-immunoassay for detection of hepatitis B surface antigen, J. Clin. Pathol. 29:873-879
- Wei R. Lmogjt GJ, Zimmerman DH, and Bond HE, Solid-Phase Enzyme immunoassay for Hepatitis B Surface Antigen, Clin. Chem., 23:813-815, 1977.
- David GS. Present W, Martinis J, Wang R, Bartholomew R, Desmond W, and Sevier ED, Monoclonal antibodies in the detection of hepatitis infection, Med. Lab. Sci. 38:341-348. 1981.
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- Kennedy RC. Ionscu-Matiu I, Alder-Storthz K, Henkel RD, Sanchez Y, Dreesman GR, Characterization of Anti- Hepatitis B Surface Antigen Monoclonal Antibodies, Intervirology. 19:176-180, 1983.