In the dog heartworm test procedure, how many drops of sample are dispensed into a new sample cup?

In the dog heartworm test procedure, how many drops of sample are dispensed into a new sample cup?

• A. 5
• B. 3
• C. 2
• D. 4

Answer: (B)

Using a precise, fixed volume of the sample is essential in this type of rapid immunoassay. In the dog heartworm test, you load a small, standardized amount of the sample into a fresh sample cup. This consistency is built into the kit’s protocol because it ensures predictable flow of the sample through the test membrane and proper interaction with the reagents. If the volume is too small, there may not be enough target antigen to create a detectable signal, increasing the chance of a false-negative. If the volume is too large, the excess can overwhelm the test, dilute reagents, or cause non-specific lines, risking an invalid or misleading result. The option that matches the kit’s recommended loading amount is the second one in the list, reflecting the standard drop count prescribed by typical heartworm test kits. Always follow the kit instructions for volume to keep results reliable and reproducible.

Using a precise, fixed volume of the sample is essential in this type of rapid immunoassay. In the dog heartworm test, you load a small, standardized amount of the sample into a fresh sample cup. This consistency is built into the kit’s protocol because it ensures predictable flow of the sample through the test membrane and proper interaction with the reagents. If the volume is too small, there may not be enough target antigen to create a detectable signal, increasing the chance of a false-negative. If the volume is too large, the excess can overwhelm the test, dilute reagents, or cause non-specific lines, risking an invalid or misleading result. The option that matches the kit’s recommended loading amount is the second one in the list, reflecting the standard drop count prescribed by typical heartworm test kits. Always follow the kit instructions for volume to keep results reliable and reproducible.