Reference tools
Tools
Free, no-login reference tools for the point of collection. Print them, bookmark them, or work them into your draw.
- Order of draw chart
The CLSI blood tube sequence, printable, with additive and inversions for every tube.
- Rejection cost calculator
Estimate the annual cost of avoidable redraws for your draw volume and rejection rate.
- Blood tube colors guide
What each stopper color means: additive, specimen type, and draw order position.