How to Use a Fecal Occult Blood Test Kit

If you experience black stool or visible blood in your stool, a fecal occult blood test (FOBT) is often recommended. One of the most common methods used in clinical settings is the colloidal gold test strip, which is known for its simplicity and convenience. Below are the detailed steps for using this type of test:

Testing in a Medical Setting

Step 1: Sample Collection – In a hospital or clinic, a trained medical professional will collect a sufficient amount of stool sample and place it in a designated container.

Step 2: Laboratory Analysis – The sample is then analyzed by the laboratory staff using specialized equipment and procedures to ensure accurate results.

Home Self-Testing

Step 1: Prepare the Sample – At home, begin by collecting a small amount of stool, approximately the size of a fingernail, and place it into a clean container.

Step 2: Dilute with Distilled Water – Add a small amount of distilled water to dissolve the sample thoroughly. This helps in extracting any hidden blood components.

Step 3: Use the Test Strip – Insert the colloidal gold test strip into the solution and wait for the results to appear. If two lines are visible on the strip, it indicates a positive result for occult blood. If only one line appears, the result is negative.

Why Accuracy Matters

It's important to follow the instructions carefully to ensure accurate results. False positives or negatives can occur if the test is not performed correctly. If you're unsure about the result, it's always best to consult a healthcare provider for further evaluation.