BD Microtainer Capillary Blood Collection Tubes & Lancets

When you're drawing from a small vein, a heel stick on a neonate, or a fingerstick in a busy outpatient clinic, the difference between a usable sample and a redraw comes down to microcollection technique. The BD Microtainer line is built for exactly these low-volume draws — pairing color-coded capillary tubes with matched lancets so labs can go from puncture to processing without the trauma of a venous stick.

The capillary tubes handle the two most common microcollection needs. The lavender-top K2 EDTA tube (365974) collects 250–500 µL for hematology and CBC work, while the green-top lithium heparin tube (365965) captures 200–400 µL for plasma chemistry. Both use the integrated BD Microgard closure, which lets you seal and mix without removing a separate cap — reducing splatter risk and speeding up handling at the point of collection.

Choosing the right lancet is really a question of puncture depth and patient. For adult and pediatric fingersticks, the contact-activated lancet (366593) sets a fixed 1.8 mm depth with a 21-gauge needle and push-button activation for consistent, medium-flow draws. When you need a shallower, gentler puncture, the 30-gauge lancet (366592) drops to 1.5 mm. For infant heel sticks, the QuikHeel Safety Lancet (368101) is purpose-designed with a permanently retracting blade to protect both the neonate and the clinician. Fixed-depth activation matters here: it standardizes results across staff and helps meet safety-engineered device requirements.

Matching tube additive to test and lancet depth to patient is the core of reliable microcollection — and stocking both from the same system keeps your workflow predictable. Explore the full BD catalog for complementary specimen-collection and safety products.