Heartworm disease is a serious and potentially fatal condition affecting dogs in many parts of the world. Caused by the parasitic worm Dirofilaria immitis, heartworms are transmitted through the bite of an infected mosquito. Once inside the host, the larvae mature into adult worms and settle in the heart, lungs, and associated blood vessels. This can lead to severe lung disease, heart failure, and damage to other organs if left untreated.

What Are Heartworms

Heartworms are long, thread-like parasites that can grow up to 12 inches in length. In dogs, which are the definitive host, the worms reproduce and can live for five to seven years. In extreme cases, a dog can be infected with more than 200 worms. The disease often progresses silently for months or even years, making early detection critical for effective treatment. Transmitted through the bite of an infected mosquito, heartworms primarily inhabit the heart, lungs, and surrounding blood vessels, where they cause significant damage. If left untreated, heartworm disease can lead to heart failure, lung disease, and even death.

Transmission and Lifecycle

The lifecycle of heartworms begins when a mosquito bites an infected animal and ingests microfilariae (the larval stage). These larvae develop into infective forms within the mosquito and are then transmitted to another dog when the mosquito feeds again. Once in the new host, the larvae travel through the bloodstream and mature in the heart and lungs, where they begin to cause damage.

Clinical Significance of Heartworm Disease

Symptoms of heartworm disease can include mild coughing, lethargy, and reduced appetite, and may progress to labored breathing, fainting, or even sudden death in severe cases. Because clinical signs often do not appear until the disease is advanced, early and regular screening is essential for protecting canine health.

The Importance of Testing

Heartworm testing plays a key role in preventative care. Most tests detect heartworm antigens produced by adult female worms, or microfilariae circulating in the blood. Regular screening allows for early intervention and helps veterinarians choose the appropriate treatment plan.

Annual testing is recommended, especially in areas where mosquitoes are active year-round. The accuracy and reliability of these diagnostic tools are critical for ensuring proper care and disease management.

ICL’s Role in Heartworm Diagnostic Development

To help IVD companies overcome these challenges, ICL ensure the accuracy and sensitivity of antibodies is ready to transfer over to the test scenarios, lowering the risk of potential false positive or false negative results. Plus, ICL scalability ensures there are enough high-quality mpox antibodies that aid in rapid development of diagnostics in areas most affected by the virus.

As the demand for rapid and accessible diagnostic tools increases, there is a growing market for products that can meet the needs of public health agencies, healthcare providers, and individuals. The ongoing mpox outbreak highlights the importance of developing accurate and accessible diagnostic tools, and ICL is helping to ensure IVD companies and researchers have the reagents they need to succeed.

Get in touch with our sales team to learn about ICL’s reliable and scalable mpox antibodies and proteins.

Our Heartworm Product Offerings Include

 Note: Top Sellers (*)

Polyclonal antibodies (both conjugated and unconjugated)
Chicken anti-Canine Heartworm (*Cat# CHRT-65A)
Chicken anti-Canine Heartworm- HRP Conjugate (Cat# CHRT-65P)
Rabbit anti-Canine Heartworm (Cat# RHRT-65A)

Five monoclonal antibodies for consistent and specific detection
Clone 103 (Cat# MHRT-40A-103)
Clone 104 (Cat# MHRT-65A-104)
Clone 1A8 (Cat# MHRT-40A-1A8)
Clone 1G6 (*Cat# MHRT-40A-1G6)
Clone 2B3 (Cat# MHRT-40A-2B3)

Heartworm antigen for use as a reliable standard
Canine Heartworm Antigen (*Cat# RA-40HRT)

ICL’s reagents are designed for performance, consistency, and accuracy, helping our partners develop trusted and effective diagnostic tools for heartworm detection.