Blood samples for hematology (CBC), specific chemistry, and blood bank testing are collected using special tubes known as lavender or purple top tubes. These tubes contain EDTA, an …

Jun 20, 2025 · This tube needs to be completely filled, the ratio of blood to anticoagulant is critical for valid coagulation results. After the tube has been filled with blood, immediately invert the …

Plastic tubes contain clot activator and are not recommended for blood banking. Inversions ensure mixing of clot activator with blood and clotting within 30-60 minutes.

These tubes preserve the glucose and are useful when drawing blood samples a long distance from the hospital. Glucose levels may decrease after one hour if the blood is collected in a …

Jul 18, 2025 · Discover everything you need to know about phlebotomy tubes, including types, uses, and best practices for effective blood collection.

If a coag tube (light blue) is the only tube or the first tube to be drawn, a 5 mL discard tube must be drawn first. Blood Culture Options (Specify Culture Type when Ordering)

Jun 2, 2024 · There are different colored tubes used for blood collection in medical lab settings for specific tests and purposes. Each colored tube contains different additives or anticoagulants to …

Let's take a look at common specialty tubes, their additives, and associated tests.

Discover the ultimate information about phlebotomy tube colors and their applications. Ideal for healthcare workers and students.

Nov 14, 2024 · Filled with ethylenediamine tetraacetic acid (EDTA), this tube prevents blood coagulation by sequestering calcium ions, ensuring the integrity of cellular analyses and …