$0.99 first weekthen $7.99 a week · cancel anytimeStart my first week →
VisaMastercardAmerican ExpressDiscoverApple PayGoogle Pay

For CRCST · CSPDT

Pass your sterile processing exam on the first try.

640+ sterile processing practice questions built like the real exam, with every answer explained, even the wrong ones. Decon, sterilization, instruments and quality monitoring, drilled on your phone between trays until you stop missing them.

Start your first week for $0.99 →$0.99 for 7 days, then $7.99/week. Cancel anytime.
VisaMastercardAmerican ExpressDiscoverApple PayGoogle PaySecure checkout by Stripe
Expert reviewedNo download needed15 minutes a day
Question 8 of 20 · Sterilization0:42
Biological indicators
The test BI shows no growth, but the unprocessed control BI from the same lot also shows no growth. What should the technician conclude?
AThe cycle passed, because the test BI shows no growth
BThe test is invalid; find the cause and repeat the test
CThe sterilizer failed and every load must be recalled
DOnly the control vial needs to be incubated again tomorrow
Why B is correct. If the control does not grow, the spores, the media or the incubator are suspect, so a negative test BI proves nothing.
Why A is wrong. YOUR ANSWER
A negative test only means something when the control grows.
Exam tactic: no growth in the control means no valid test.
64%
Readiness Scoreclimbs with every session
Weak spotsfound for you
12 day streakbetween trays