- Evacuated sterile blood collection tube for serum analysis
- Clot activator coating
- Red BD Hemogard safety closure
- Medical Grade PET tube
- 16mm x 100mm
- No additive
- Block Label
BD Vacutainer Plus plastic serum and SST tubes are coated with silicone and micronized silica particles to accelerate clotting. A silicone coating reduces adherence of red cells to tube walls. The silica coating can sometimes cause the inner tube wall to appear cloudy and/or filmy. This cloudy appearance does not make the tubes unacceptable for use.