Hemolysis — the rupture of red blood cells — is one of the most common reasons blood samples get rejected,...

Some patients have veins that are thin, mobile, or fragile, and drawing blood from them takes a gentler approach than...

The order of draw is the sequence for filling blood collection tubes during one venipuncture. Following it prevents additive carryover...

Both a butterfly needle and a straight needle are standard for blood collection, but they suit different veins. A butterfly...

Choosing between a 21G and a 23G butterfly needle affects blood flow, patient comfort, and hemolysis risk. The wider 21G...