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The range of sample preservation products include:
As immunophenotyping moved from the research laboratory in to the clinical laboratory, the need for controls grew as did the pressure on the instrument availability. Cyto-Chex®, which preserves whole blood, as well as many other sample types for up to seven days facilitates easy transport of samples and batching.
However, development did not stop there, and Cyto-Chex® BCT was introduced, a direct-draw vacuum blood collection tube that contains a preservative reagent. The integrity of white blood cells is maintained at room temperature for three times longer than traditional methods.
Developed over 15 years, CD-Chex® Plus controls for immunophenotyping by flow cytometry. They closely resemble patient samples with the inclusion of both red and white cells stabilised in a way which preserves the antigen sites. CD-Chex® also offer a complete process control when evaluating CD-34
Streck Cell Preservative is an easy-to-use liquid preservative that stabilises cell morphology and preserves cellular antigen expression.
The proof of Stability
Light scatter profiles comparing K2EDTA bone marrow samples diluted 1:1 with Streck Cell Preservative at six hours to the same K2EDTA sample diluted 1:1 with Streck Cell preservative analysed at three days post collection.
Streck Cell Preservative is a liquid preservative for:
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A vacuum tube for the collection, transport andrtetention of whole blood samples for immunophenotyping by flow cytometry.
Light scatter profiles from a blood sample drawn onto a K2EDTA tube analysed at six hourscompared to data from a blood sample from the same patient drawn into a Cyto-Chex® BCT tube analysed at seven days.
CD-Chex® Plus is a complete positive procedure control manufactured form normal human peripheral blood leukcocytes and erythrocytes.
The range has been extended to match the changing needs of laboratories and now includes:
Each range includes CD4 Low control which offers decreased levels of CD4 positive cells (~ 200 cells/µl)
CD-Chex Plus determines the accuracy and reproducibilityof the immunophenotyping precedure including:
CD-Chex® Plus is supplied in a format that can be used on any platform.
CD-Chex Plus in a new plastic vial with pierceable caps.
Optimised for Beckman Coulter flow cytometers
A whole blood control for enumerating CD34 positive cells by flow cytometry.
A whole blood control, manufactured with reticulocytes that resemble the appearence of patient samples for accurate identifications. Available in three levels which are well positioned to monitor the haemostatic response.