Residential Care / Assisted Living: What Is Residential Care for the Elderly? Residential Care Facilities for the Elderly (RCFE) serve persons 60 and older. They provide room, board, housekeeping, supervision, and personal care assistance with basic activities like personal hygiene, dressing, eating, and walking.
A potassium test is used to measure the amount of potassium in your blood. Potassium is an electrolyte important for the functions of cells.
2 Sample requirements and precautions 2.1 Medium in which measured 1. Potassium can be measured in serum, plasma (lithium heparin) or heparinâanticoagulated whole blood. Potassium is released from platelets during clotting. Therefore, plasma and whole blood concentrations are 0.1â0.7 mmol/L lower than those in serum.