View a presentation the Snohomish County Assessor's Office offers to representatives of taxing districts each year to help them learn about the levy process. The information provided can be useful to anyone wanting to learn more about this process.
The examination for Bloodstain Pattern Analysis Certification is divided into four (4) sections. Six (6) hours are allotted to complete the entire examination. Each part/section will be graded separately. All four sections must individually be passed with a 75% on each section to pass the certification test.
SERUM, PLASMA OR WHOLE BLOOD COLLECTION. Draw blood in the color-coded VacutainerÂ® tube indicated in the alphabetical test listing. For serum or plasma, draw approximately 2 1/2 times the requested volume. For serum, allow the blood to clot sixty minutes and separate by centrifugation. For plasma and whole blood, completely fill the Vacutainer whenever possible to eliminate dilution from the anticoagulant or preservative and immediately mix the blood by gently and thoroughly inverting the tube five to ten times.