You may be trying to access this site from a secured browser on the server. Please enable scripts and reload this page.
Turn on more accessible mode
Turn off more accessible mode
Skip Ribbon Commands
Skip to main content
Turn off Animations
Turn on Animations
Rush Medical Labs Department Site
Rush Medical Labs
Tube Guide – Order of Draw
Normal Ranges for Common Laboratory Tests
Add-on Restrictions for Common Requests
Specimen Stability Chart
Outpatient Laboratory Services
Laboratory Information Systems
Point of Care
GENERAL GUIDELINES FOR BLOOD COLLECTION
Whenever possible, collect the blood directly into the required tube using the evacuated tube and needle holder device. If blood is collected into a syringe, it can be transferred to an evacuated tube. Do not remove the stopper; slowly inject the blood through the stopper down the side of the tube. Do not overfill the tube by forcing the plunger down on the syringe. Transfer by this method may hemolyze the specimen and produce spurious results for certain clinical chemistry tests, notably potassium.
Volume requirements are listed for each test (See Specimen/Minimum Volume section for specific test). To determine the amount of whole blood needed to yield the required volume of plasma or serum, multiply the specimen required by 2 to 2.5.
Blood Collection Tube Drawing Order
Tube Guide - Order of Draw
Timed Specimens/Multiple Specimens
If more than one timed specimen for the same test is collected, the collection time MUST be indicated on each tube (i.e. glucose tolerance testing, drug level analysis, etc).
Prior to collection, no food or beverages are to be ingested, except water, for 12-14 hours. Water and medication are allowed unless specifically prohibited by test requirements or a physician's order.