Final answer:
The abbreviations associated with time-released medications are XR (Extended Release) and SR (Sustained Release), which indicate that the medication will be dispensed slowly over time to maintain a stable blood concentration. SA (Sustained Action) can sometimes indicate this as well but is less commonly used.
Step-by-step explanation:
These abbreviations indicate that the medication is formulated to release the active substance over a longer period compared to an immediate-release formulation, which helps to maintain a more consistent blood concentration of the drug. XR and SR are used to improve patient adherence to the medication schedule by reducing the frequency of doses needed per day. SA (Sustained Action) can also indicate a time-released medication, although it's not commonly used. The abbreviations ID (intradermal), IVP (intravenous push), RSD (relative standard deviation), SIM (selective ion monitoring), SPE (solid-phase extraction), SRM (single-reaction monitoring), TDM (therapeutic drug monitoring), and the concept of elimination half-life (1/2 T1/2) are not directly associated with time-released medications.