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Insulin Types Quiz for Nursing Students (Onset, Peak, Duration, Mixing & IV Use)

Test your knowledge of insulin types with this multiple-choice quiz designed for nursing students and NCLEX review.

This quiz covers onset, peak, duration, mixing rules, IV administration, and key differences between rapid-, short-, intermediate-, and long-acting insulins. Each question includes a clear, simple rationale to help reinforce key concepts.

Don’t forget to watch the insulin types nursing review and access the insulin types notes before taking the quiz.

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Insulin Types Quiz Peak, Onset, Duration Nursing NCLEX

1. Which insulin type is considered intermediate-acting?(Required)
2. The nurse is preparing to administer insulin aspart and knows that this type of insulin has an onset of:(Required)
3. Which type of insulin should never be mixed with any other insulin?(Required)
4. The nurse knows that which insulin below has a 24-hour duration?(Required)
5. The nurse is required to mix NPH and regular insulin. Which action by the nurse is correct when mixing these insulin types?(Required)
6. The nurse is preparing to administer regular insulin via subcutaneous injection. This insulin is considered:(Required)
7. Which insulin type below has the fastest onset?(Required)
8. The nurse knows that all the insulin types below have a peak EXCEPT:(Required)
9. True or False: Regular insulin is rapid-acting.(Required)
10. Which insulin type is the only one approved for intravenous (IV) administration?(Required)
11. True or False: Ultra-rapid-acting insulins include aspart and lispro with an absorption booster added to speed up absorption.(Required)
12. What is the onset of an ultra-rapid-acting insulin?(Required)
13. ____________ is the time when the insulin works the strongest.(Required)
14. When is the patient most at risk for hypoglycemia?(Required)
15. ___________ is how fast the insulin starts working.(Required)

Insulin Types Quiz: Onset, Peak, Duration

  1. Which insulin type is considered intermediate-acting?

A. Lispro
B. Aspart
C. Regular
D. NPH

The answer is D: NPH. NPH is considered an intermediate-acting insulin. This means it works slower than short-acting insulin but lasts longer. Lispro and aspart are rapid-acting insulins that work very quickly. Regular insulin is short-acting, meaning it works a little slower than rapid-acting but does not last as long as NPH.

  1. The nurse is preparing to administer insulin aspart and knows that this type of insulin has an onset of:

A. ~15 minutes
B. ~30 minutes
C. ~1 hour
D. ~2 hours

The answer is A: 15 minutes. Insulin aspart is a rapid-acting insulin. Onset means how quickly the insulin starts to lower blood sugar after it is given. Aspart begins working in about 15 minutes. It usually peaks in about 1 hour, which means that is when it is working the strongest and blood sugar is most likely to drop. Its duration is about ~3 hours (3–5 hours), which means that is how long it continues to lower blood sugar before it stops working.

  1. Which type of insulin should never be mixed with any other insulin?

A. NPH
B. Glargine
C. Regular
D. Lispro

The answer is B: Glargine. Glargine is a long-acting insulin that should never be mixed with other insulins because it has a special acidic formula that changes how it works in the body. Mixing it can change how it is absorbed and make it unsafe or unpredictable. NPH and regular insulin can be mixed together. Rapid-acting insulins like lispro can also be mixed with NPH. Long-acting insulins like glargine should always be given alone.

  1. The nurse knows that which insulin below has a 24-hour duration?

A. Glargine
B. Aspart
C. Regular
D. NPH

The answer is A: Glargine. Glargineis a long-acting insulin that can last up to about 24 hours. Duration means how long the insulin continues working in the body to lower blood sugar. Aspart works only a few hours. Regular insulin lasts about ~8 hours (5–8 hours). NPH lasts about ~16 hours (12–18 hours). Long-acting insulins like Glargine are used to provide steady blood sugar control throughout the day.

  1. The nurse is required to mix NPH and regular insulin. Which action by the nurse is correct when mixing these insulin types?

A. The nurse draws up half the ordered dose of NPH, then draws up the full dose of regular, and then finishes drawing up the NPH.
B. The nurse draws up the regular insulin first and then the NPH.
C. The nurse draws up the regular insulin last.
D. None of the answers; these insulin types should never be mixed.

The answer is B: The nurse draws up the regular insulin first and then the NPH. Regular insulin must be drawn up first to prevent contaminating the clear regular insulin with the cloudy NPH. The rule to remember is “clear before cloudy.” If NPH gets into the regular insulin vial, it can change how the regular insulin works. Although premixed insulin pens are more common in practice today, this mixing order is still very important to know for exams like the NCLEX.

  1. The nurse is preparing to administer regular insulin via subcutaneous injection. This insulin is considered:

A. Rapid-acting
B. Short-acting
C. Intermediate
D. Long-acting

The answer is B: Short-acting. Regular insulin is classified as short-acting insulin. It usually begins working in about 30 minutes, peaks in about ~2 hours (2–5 hours), and lasts about ~ 8 hours (5–8 hours). It is slower than rapid-acting insulin but faster than intermediate- or long-acting insulin. It is often given before meals and can also be given IV in emergencies.

  1. Which insulin type below has the fastest onset?

A. NPH
B. Glargine
C. Regular
D. Lispro

The answer is D: lispro. Lispro is a rapid-acting insulin and has the fastest onset, beginning to work in about 15 minutes. It peaks in about 1 hour and lasts around ~3 hours (3–5 hours). Rapid-acting insulins are designed to control blood sugar spikes that happen after eating. Regular insulin and NPH work slower, and glargine is long-acting and works gradually over many hours.

  1. The nurse knows that all the insulin types below have a peak EXCEPT:

A. NPH
B. Glargine
C. Regular
D. Lispro

The answer is B: Glargine. Glargine is a long-acting insulin that does not have a pronounced peak. This means it works steadily and evenly over about 24 hours without a strong high point of action. NPH peaks at about 8 hours. Regular insulin peaks at about ~2 hours (2–5 hours). Lispro peaks at about 1 hour. Because glargine does not peak, it lowers the risk of sudden low blood sugar compared to insulins that have strong peak times.

  1. True or False: Regular insulin is rapid-acting.

The answer is FALSE. Regular insulin is considered short-acting, not rapid-acting. It starts working in about 30 minutes. Rapid-acting insulins include lispro and aspart, which begin working in about 15 minutes and are used right before meals.insulin.

  1. Which insulin type is the only one approved for intravenous (IV) administration?

A. NPH
B. Aspart
C. Regular
D. Glargine

The answer is C: Regular. Regular insulin is the only insulin approved for IV use. It can be given intravenously in emergency situations such as diabetic ketoacidosis or severe high blood sugar. NPH, aspart, and glargine are designed to be absorbed slowly from the fatty tissue under the skin. Giving them IV would change how they work and could be unsafe.

  1. True or False: Ultra-rapid-acting insulins include aspart and lispro with an absorption booster added to speed up absorption.

The answer is TRUE. Ultra-rapid-acting insulins are modified versions of rapid-acting insulins (like insulin aspart and insulin lispro) designed to act even faster than traditional rapid-acting types. They have a faster onset and a shorter time to peak.

  1. What is the onset of an ultra-rapid-acting insulin?

A. ~10 seconds
B. ~5 minutes
C. ~15 minutes
D. ~30 minutes

The answer is B: ~5 minutes. Onset refers to how quickly insulin begins lowering blood glucose after injection. Ultra-rapid-acting insulins are formulated to start working around 5 minutes after subcutaneous injection

  1. ______________ is the time when the insulin works the strongest.

A. onset
B. peak
C. duration
D. trough

The answer is B: peak. The peak of insulin is when its glucose-lowering effect is maximal. Knowing the peak is essential because this is the time when patients are most at risk for hypoglycemia.

  1. When is the patient most at risk for hypoglycemia?

A. during the onset
B. during the peak
C. during the duration
D. during the trough

The answer is B: during the peak. Hypoglycemia risk is highest during the peak of insulin activity because this is when the insulin effect is strongest and glucose is being removed from the blood most rapidly. Monitoring for symptoms like sweating, tremors, dizziness, and confusion is critical during this time.

  1. ______________ is how fast the insulin starts working.

A. onset
B. peak
C. duration
D. trough

The answer is A: onset. Onset refers to the time from injection until insulin begins to lower blood glucose.

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