What substance does "ASA" refer to in serum testing?

The term "ASA" in serum testing refers to Serum Acetylsalicylic Acid, which is the chemical name for aspirin. Aspirin is a medication commonly used for pain relief, anti-inflammatory purposes, and as an anticoagulant. In clinical settings, particularly in emergency medicine, testing for acetylsalicylic acid levels can be important for diagnosing aspirin overdose or toxicity, as well as monitoring therapeutic levels in patients who are on chronic aspirin therapy.

Understanding that "ASA" indicates acetylsalicylic acid helps healthcare providers assess potential complications and manage appropriate treatments. The other options refer to substances that are not represented by the abbreviation "ASA," making them less relevant in the context of serum testing for aspirin.