Chemotherapy Biotherapy Certification ONS Practice Test 2025 - Free Practice Questions and Study Guide.

The correct choice involves understanding the administration method to increase platelet counts effectively. A subcutaneous injection is commonly utilized for administering certain medications that can stimulate platelet production or mobilize platelets in the body. This method allows for a slow release of the medication into the bloodstream, which can be particularly beneficial for treatments aimed at enhancing platelet counts, such as the use of growth factors or certain immunoglobulin therapies.

In contrast, other methods listed, like intravenous therapy, typically involve a rapid infusion or administration of medications directly into the bloodstream but may not be specifically aimed at increasing platelet production. Intramuscular injections can also be used for certain medications; however, they are not the preferred route for those specifically targeting platelet counts due to factors such as the potential for localized bleeding in muscle tissue. Topical applications are not relevant in this context as they are not utilized for systemic effects regarding platelet enhancement.

Thus, the subcutaneous route is advantageous due to its ease of administration and patient comfort while effectively increasing platelet counts through sustained absorption of the agent used.