After blood cultures, coagulation tubes, serum tubes, heparin tubes, and EDTA tubes, we arrive at the final tube in the standard order of draw, the gray top.
Shanise Keith,
February 10, 2026
This week, we're examining EDTA tubes and discovering why the most commonly drawn tube in many facilities must wait until the fifth position despite its frequent use
Shanise Keith,
February 03, 2026
This week, we're examining green top heparin tubes—and discovering why tubes that prevent clotting must come after tubes that depend on clotting.
Shanise Keith,
January 27, 2026
This week, we're examining serum tubes—plain red tops and gold serum separator tubes (SST)—and discovering why these tubes must be drawn before tubes containing EDTA, heparin, or other anticoagulants
Shanise Keith,
January 20, 2026
This is the second post in our Order of Draw Deep Dive series. Last week, we explored blood culture bottles and why sterility makes them first in the collection sequence. This week, we're examining light blue top tubes and discovering why coagulation tes
Shanise Keith,
January 13, 2026
This is the first post in our Order of Draw Deep Dive series, where we'll explore the history, science, and clinical significance of each tube type in the CLSI-recommended collection sequence.
Shanise Keith,
January 06, 2026
When and How to Adjust Your Needle (And When to Stop)
Shanise Keith,
November 19, 2025
Clearing up the dangerous misconceptions about additives and order of draw
Shanise Keith,
November 04, 2025
Exploring the Viral Technique and the Science Behind Quick, Controlled Insertions
Shanise Keith,
September 29, 2025
When prevention doesn't work: Your step-by-step guide to managing fainting episodes safely and professionally
Part three in the vasovagal syncope series. Making a protocol that works for you.
Shanise Keith,
September 09, 2025
