The REAL Streaking in the laboratory 😜👀 This is how we place bacteria onto a petri dish in the lab. When a sample comes in, like urine, a throat swab, or sputum, we don’t just dump it onto the plate and hope for the best. We carefully spread the sample across the surface of the agar so any bacteria present can grow in an organized way. This process is called streaking, and it allows us to see what organisms are actually there. From a lab and ASCP perspective, streaking can be done quantitative