HBsAb Rapid Test Device/Strip (WB/S/P)

HBsAb, also called hepatitis B surface antibody or anti-HBs, is an antibody produced by the immune system against hepatitis B surface antigen. A positive HBsAb test generally indicates that the body has developed immunity to hepatitis B, either after successful vaccination or after recovery from previous hepatitis B exposure.

• The HBsAb Rapid Test Device/Strip helps determine whether a person has developed protective antibodies against hepatitis B.
• HBsAb testing may support post-vaccination antibody screening and healthcare worker immunity assessment.
• The test may also support blood donor screening, pre-employment medical testing, public health hepatitis B programs, and follow-up after hepatitis B exposure.
• A protective HBsAb level is commonly considered 10 mIU/mL or above, but final interpretation should follow local clinical guidelines and laboratory policies.

The HBsAb Rapid Test Device/Strip by LARKSOIS Pharma may be used in professional diagnostic, vaccination, and public health screening environments.

Applications

• Post-vaccination antibody screening
• Healthcare worker immunity assessment
• Blood donor screening support
• Pre-employment medical testing
• Public health hepatitis B programs
• Follow-up after hepatitis B exposure
• Laboratory and hospital screening workflows
• Point-of-care hepatitis B immunity testing
• International diagnostic supply requirements

• The HBsAb Rapid Test Device/Strip works on the principle of lateral flow immunochromatographic assay.
• When the specimen is applied to the sample area, it migrates along the membrane by capillary action.
• If hepatitis B surface antibodies are present in the sample, they interact with coated reagents on the test membrane and generate a visible test line.
• The appearance of the control line confirms that the test has run correctly.

The HBsAb Rapid Test Device/Strip uses rapid lateral flow immunochromatographic technology for qualitative detection of hepatitis B surface antibodies in whole blood, serum, or plasma specimens.

Benefits

• Rapid visual result
• Qualitative HBsAb screening
• Suitable for whole blood, serum, or plasma
• Simple test procedure
• No advanced instrument required
• Useful for point-of-care and laboratory settings
• Device and strip format availability
• Supports hepatitis B immunity evaluation

The HBsAb Rapid Test Device/Strip is designed for whole blood, serum, or plasma specimens. This flexibility helps healthcare providers select the most convenient specimen type depending on the testing environment.

Guidance

• Use approved whole blood, serum, or plasma specimens only
• Collect specimens according to the product insert
• Use clean and suitable sample collection materials
• Avoid contaminated or improperly stored samples
• Apply the specimen correctly to the sample area
• Add buffer as instructed
• Read results only within the recommended time window
• Handle all blood specimens as potentially infectious material

Note

Specimen collection, handling, testing, timing, and storage should always follow the official LARKSOIS Pharma kit insert.

The HBsAb Rapid Test Device/Strip by LARKSOIS Pharma is designed for qualitative detection of hepatitis B surface antibody in whole blood, serum, or plasma specimens. HBsAb detection helps assess immune response to hepatitis B, commonly after vaccination or previous HBV exposure.

• A positive HBsAb result may suggest immunity due to vaccination or previous hepatitis B exposure.
• A negative HBsAb result may indicate that antibodies were not detected at the test’s detectable level.
• HBsAb testing is different from HBsAg testing because HBsAg is mainly used to identify active HBV infection.
• Healthcare professionals should interpret HBsAb results with vaccination history, exposure history, patient risk profile, and laboratory recommendations.

The HBsAb Rapid Test Device/Strip is a screening aid and should not be used as the only basis for final clinical decisions. Results should be interpreted with medical history, vaccination status, exposure risk, and confirmatory laboratory testing when required.

Instructions

• For professional in-vitro diagnostic use only
• Handle all blood specimens as potentially infectious
• Wear gloves during sample handling
• Do not reuse the test device or strip
• Avoid specimen cross-contamination
• Do not use damaged or expired kits
• Read results only within the recommended time
• Confirm results where clinically required

Instructions

• Rapid visual result
• Suitable for whole blood, serum, or plasma
• Simple test procedure
• No advanced instrument required
• Useful for point-of-care and laboratory settings
• Device and strip format availability
• Supports hepatitis B immunity evaluation
• Designed for international diagnostic supply needs

Note

The HBsAb Rapid Test Device/Strip provides a practical solution for healthcare centers, diagnostic distributors, hospitals, laboratories, and medical procurement agencies.

Steps

• Bring the test device or strip, sample, and buffer to room temperature
• Open the sealed pouch only when ready to test
• Place the device on a clean, flat surface or prepare the strip according to instructions
• Apply whole blood, serum, or plasma to the sample area
• Add buffer as instructed in the kit insert
• Wait for the recommended reaction time
• Read the test and control lines within the valid time window
• Do not interpret results after the recommended reading time
• Dispose of used materials according to laboratory safety rules

Note

Testing should be performed by trained healthcare professionals according to the official LARKSOIS Pharma product insert.

Positive

A positive result indicates that hepatitis B surface antibody has been detected. This may suggest immunity due to vaccination or previous exposure.

Negative

A negative result indicates that HBsAb was not detected at the test’s detectable level. Further laboratory testing may be required if clinical evaluation is needed.

Invalid

If the control line does not appear, the test is invalid. A new test should be performed using a fresh device or strip.

Instructions

• Store the HBsAb Rapid Test Device/Strip according to the product label and insert
• Store in a dry place
• Keep away from direct sunlight
• Do not freeze
• Keep sealed until use
• Use immediately after opening the pouch
• Do not use expired test kits
• Follow professional biosafety precautions

Instructions

• For professional in-vitro diagnostic use only
• Handle all blood specimens as potentially infectious
• Wear gloves during testing
• Do not reuse the test device or strip
• Avoid sample cross-contamination
• Do not use damaged or expired kits
• Read results only within the recommended time
• Confirm results with clinical evaluation when required

LARKSOIS Pharma focuses on internationally suitable diagnostic solutions for healthcare buyers, distributors, laboratories, and medical institutions. The HBsAb Rapid Test Device/Strip (WB/S/P) is developed with emphasis on quality, ease of use, rapid screening, and professional diagnostic support.

Advantages

• International infectious disease diagnostic portfolio
• Reliable hepatitis B immunity screening support
• Suitable for healthcare buyers and distributors
• Professional diagnostic quality focus
• Useful for hospitals, laboratories, and vaccination programs
• Practical point-of-care diagnostic format
• Supports accessible and scalable infectious disease testing