Q: Will steroid injections affect my hospitalized 3-year-old child's immunity test results?
- Myeongchan Kim, MD

- 57 minutes ago
- 2 min read
Medically reviewed by Sang Hyun Ahn, MD
Content edited by Myeongchan Kim, MD
This post is a dramatization of a question and answer session experienced by our actual medical reviewers. Please note that this content is for informational purposes only and does not constitute medical advice. Always consult with a qualified healthcare professional for any health concerns or before making any decisions related to your health or treatment.
Question:

My 3-year-old child gets sick often and is currently hospitalized. They were recently given a steroid injection. I am wondering if administering steroids will affect the results of an immunity test? Will the results still be accurate, or does it not matter?
Answer:
I understand how worrying it can be to have your young child hospitalized due to frequent illnesses.
To answer your question regarding the use of steroids (such as Prednisolone) and immunity testing:
Impact of Steroids on Immunity Tests
• Yes, steroid administration can indeed affect the results of an immune test.
• It can particularly alter white blood cell counts and lymphocyte distribution.
• While immunoglobulin tests are relatively less affected, the results of some cellular immunity tests can be distorted or skewed.
When to Take the Test
• Short-term use (3 to 5 days): It is generally recommended to conduct the immune test 1 to 2 weeks after stopping the steroid medication.
• Long-term use: It is essential to consult with your medical team to determine the most appropriate testing schedule.
• If an urgent test is needed: You must ensure that the medical staff and laboratory are aware that steroids have recently been administered.
Key Recommendations
• Please directly ask your attending physician about how the steroid treatment might impact the accuracy of the specific immune tests they are ordering.
• The timing of the tests can be adjusted depending on their specific purpose and medical urgency.
• Observing immune trends through repeated testing over time is also a standard approach.
Since the goal of these tests is likely to find the underlying cause of your child's frequent illnesses, please consult your attending doctor to decide on the optimal timing for the blood draw to ensure the most accurate results. I hope your child recovers swiftly!

For extra peace of mind and clear guidance when tracking your child's symptoms, the FeverCoach app is always there to help.




