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It happens to all of us. We're getting a new method developed and validated and then it comes time to run our negative urines. And everything comes up as positive! There are peaks for our analytes of ...
Have you ever encountered problems loading your samples onto an SPE or SLE plate? Aside from sample viscosity or cartridge blockages, a good troubleshooting step to start with is ensuring that you are...
Most clinical and forensic labs have a used a traditional approach for drug testing called screen with reflex to confirmation. This involves analyzing samples using an immunoassay technique that ident...
Let's face it, the whole solid phase extraction method development process can be time consuming and expensive. So Dilute-and-Shoot methods end up being the choice in some laboratories. The problem is...
Synthetic cannabinoids are some of the most widely abused drugs in the world. They are structurally similar and have similar effects to marijuana but are frequently referred to as “legal highs”. Chemi...
The sole purpose for method development is to construct a robust and analytically sound method that will not just pass the barriers of validation, but provide physicians and patients with sound and re...
When trying to develop a new method for the detection of a drug panel, you need to refer to reliable sources to learn all you need to know regarding your analytes. For this post, we’ll go in detail th...
Before we get into our extractions, we need to set up our LC/MS to detect our analytes of interest. The LC will provide the chromatography - or separation of our analytes - and the MS will support det...
Evaporative crosstalk is contamination that occurs during evaporation of the elution solvent after SLE or SPE extraction. Volatile analytes evaporate, then redistribute in adjacent wells in a 96-well ...
You've just decided to develop a solid phase extraction (SPE) method for a new assay in your lab. However, there are so many decisions to be made! Which company to choose? Which product to use? Polyme...