Question

A client with tuberculosis receiving cycloserine (Seromycin Pulvules) orally twice daily must have blood drawn in 1 week to measure the serum concentration of the medication. The nurse prepares the client for this test by providing which information to the client?

1) Withhold the morning dose on the day of the scheduled blood test.
2) Take the morning dose and have the blood drawn 2 hours after taking the dose.
3) Withhold the evening dose before the test and the dose scheduled for the morning of the test.
4) Double the dose the evening before the test and withhold the morning dose on the day of the test.

Answer 1

The client should take the morning dose and have the blood drawn 2 hours after taking the dose.

Step-by-step explanation:

To prepare for the blood test to measure the serum concentration of cycloserine (Seromycin Pulvules), the client with tuberculosis should follow the guidance of taking the morning dose and having the blood drawn 2 hours after taking the dose. This ensures that the medication has reached its peak concentration in the bloodstream. Withholding the morning dose or doubling the dose before the test may affect the accuracy of the test results.