The Canine Heartworm Antigen (CHW Ag) Rapid Test Kit is a professional veterinary in-clinic diagnostic test that detects Dirofilaria immitis (heartworm) antigen in canine whole blood, serum, or plasma using a colloidal gold immunochromatographic assay. The test delivers a qualitative positive/negative result in 5–10 minutes and is supplied as a convenient 10-test kit with individually packaged test cassettes, disposable droppers, and buffer solution.
Heartworm disease is a serious, potentially fatal condition spread by mosquitoes, and annual or pre-treatment antigen screening is a standard part of canine preventive care. The CHW Ag rapid test gives veterinary clinics, animal hospitals, and diagnostic laboratories a fast, in-house canine heartworm screening option without waiting on external laboratory turnaround.
Key Benefits of the Canine Heartworm Antigen Rapid Test
- Detects Dirofilaria immitis antigen directly from whole blood, serum, or plasma
- Rapid 5–10 minute result time for same-visit clinical decisions
- 98.5% sensitivity and 98.8% specificity in validation testing
- Room-temperature stable no cold chain transportation required
- Complete 10-test kit with cassettes, droppers, and buffer included
- 2-year shelf life from date of manufacture
- Simple 3-step workflow suited to busy veterinary clinics
How the Canine Heartworm Antigen Test Works
Colloidal Gold Immunochromatographic Assay
The kit uses a colloidal gold immunochromatographic (lateral flow) method to detect circulating heartworm antigen. A small blood, serum, or plasma sample is combined with the supplied buffer and applied to the test cassette; antigen present in the sample binds to labelled antibodies and produces a visible line at the test position.
Simple 3-Step Test Procedure
- Collect the specimen whole blood, serum, or plasma from the patient.
- Add the sample and buffer load the sample onto the cassette, then add 3–4 drops of buffer solution using the supplied dropper.
- Read the result interpret the test and control lines after 5–10 minutes.
Product Specifications
| Specification | Details |
| Product Name | Canine Heartworm Antigen (CHW Ag) Rapid Test Kit |
| Model Number | MSLDH06B |
| Test Target | Dirofilaria immitis (Canine Heartworm) Antigen |
| Method / Principle | Colloidal Gold Immunochromatographic Assay |
| Sample Type | Whole blood, serum, or plasma |
| Sample Volume | 3–4 drops |
| Sensitivity | 98.5% |
| Specificity | 98.8% |
| Assay Time | 5–10 minutes |
| Kit Size | 10 Tests |
| Included Components | 10 test cassettes, 10 buffer vials, 10 droppers, instructions for use |
| Storage | Room temperature; no cold chain required |
| Shelf Life | 2 years |
| Intended User | Professional veterinary use |
| Condition | New |
What’s Included in the Kit?
- 10 × CHW Ag test cassettes
- 10 × buffer vials
- 10 × disposable droppers
- Instructions for use
Applications and Use Cases
Veterinary Clinics
Supports routine annual heartworm screening and pre-treatment testing before starting or renewing a heartworm prevention programme.
Animal Hospitals
Provides a rapid in-house screening option that supports same-visit clinical decisions for symptomatic or at-risk dogs.
Veterinary Laboratories
A convenient, room-temperature-stable rapid test format suited to laboratories running multiple canine diagnostic panels.
Frequently Asked Questions
What does the CHW Ag rapid test detect?
It detects circulating Dirofilaria immitis (heartworm) antigen in canine whole blood, serum, or plasma.
How long does the test take to produce a result?
Results are ready in approximately 5–10 minutes after adding the sample and buffer to the cassette.
What sample types can be used?
The kit accepts whole blood, serum, or plasma, requiring only 3–4 drops per test.
How accurate is the CHW Ag test?
The kit has demonstrated 98.5% sensitivity and 98.8% specificity in validation testing.
Does the kit need refrigeration?
No. The kit can be stored at room temperature and does not require cold chain transportation, simplifying storage in a clinic setting.
Can this test replace a full veterinary diagnosis?
No. A rapid antigen result should always be interpreted by a qualified veterinary professional alongside clinical signs, patient history, and confirmatory testing where indicated.
Order the Canine Heartworm Antigen (CHW Ag) Rapid Test Kit
The CHW Ag Rapid Test Kit gives veterinary clinics a fast, accurate, room-temperature-stable option for canine heartworm antigen screening. With a 5–10 minute assay time, 98.5% sensitivity, and a complete 10-test kit configuration, it is a practical addition to any veterinary diagnostic workflow.
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