Not all PT programs use that type of scale, but we have used this for near 30 years and have a sense of its strengths and weaknesses.
Each year we look at the proportion of laboratories that are able to achieve at least 90 percent of their achievable score. While most are at or near 100 percent, there are always some that fall below. On average, over the last 9 years, 75 percent of clinical laboratories earn 90 percent or greater of their achievable score. Large complex laboratories tend to score higher than smaller laboratories.