St. Rose Health Center staff members and volunteers will be on hand from 6:30 to 9 a.m. Saturday, April 23 for the next blood screenings. The public is encouraged to attend the walk-in event. Services include a $25 blood profile that entails a complete blood count; comprehensive analysis of more than 20 blood chemistries; lipid profile for a breakdown of cholesterol and triglyceride numbers; and a thyroid test.