Anabolic steroids differ in their characteristics, which means there are steroids that are only suitable for specific uses. For instance, Trenbolone is not recommended for bulking but it is an outstanding fat burner. This makes it perfect for a lean mass cycle or a cutting cycle. Always take the side effects of a particular compound into consideration whenever you plan a stack. Do not combine anabolic steroids that show similar side effects. For example, never combine Anapolon and Dianabol because they are already quite toxic and if you combine them, the toxicity will increase exponentially and cause serious damage to your body.
Antigen testing , in most practices, has supplanted or supplemented microfilarial detection. Combining the microfilaria and adult antigen test is most useful in dogs receiving diethylcarbamazine or no preventative (as macrolides as for example ivermectin or moxidectin typically render the dog amicrofilaremic). Up to 1% of infected dogs are microfilaria-positive and antigen-negative.  Immunodiagnostics ( ELISA , lateral flow immunoassay , rapid immunomigration techniques) to detect heartworm antigen in the host's blood are now regularly used. The weakness of these tests is they only detect the antigens released from the adult female worm's reproductive tract , so produce negative results during the first five to eight months of infection.  The specificity of these tests is close to 100%, and the sensitivity is more than 80%.  A recent study demonstrated a sensitivity of only 64% for infections of only one female worm, but improved with increasing female worm burden (85%, 88%, and 89% for two, three, and four female worms, respectively). Specificity in this study was 97%.  False-negative test results can be due to low worm counts, immature infections, and all-male infections.
The best course of action may be to utilize enough non-hormone steroids, and during the last phase of the cycle, using fast acting substances like testosterone propionate or trenbolone. Oral dianabol may also be effective as it can clear away quickly from the body. Also, during the whole cycle, efforts should be made to keep the levels of estrogen down. This can be done with the help of compounds like formestane and arimidex . Taking non-aromatizable steroids like winstrol and trenbolone is also a good way to keep estrogen levels under control.