The Tube That Changed Everything
A History of the Evacuated Blood Collection System
Shanise Keith, March 31, 2026
Recent Posts
Syncope Case Studies: Real Failures, Real Consequences
These are real cases. Real patients. Real verdicts.
Shanise Keith, March 24, 2026
Why Veins Don’t All Behave the Same
Understanding elasticity, aging, and what happens inside the walls
Shanise Keith, March 17, 2026
Your Vein, My Call: When to Hold the Line — and When to Let It Go
How to Tell the Difference Between a Patient Preference and a Patient Safety Problem
Shanise Keith, March 10, 2026
Teacher Tips: When Students Teach You Title...
Growth Doesn't Only Flow One Way.
Shanise Keith, March 03, 2026
Blood Draws After Mastectomy: What New Research Shows
This post is part of an ongoing series where I answer questions from readers and students.
Shanise Keith, February 24, 2026
The Bloody Truth About Valentine's Day
This week we learn about Lupercalia, an ancient tradition with a blood sacrifice.
Shanise Keith, February 17, 2026
The Order of Draw Series: Part Six - Potassium Oxalate & Sodium Fluoride Tubes
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
The Order of Draw Series: Part Five - EDTA Tubes
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
The Order of Draw Series: Part Four - Heparin Tubes
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