FDA_TrackerJim said:If you are comparing against somebody else’s result, check that you are comparing the same measurement taken the same way.
This is exactly what I could not find anywhere else. Sending this to two other people who asked me the same thing last week.
Adding the clinical framing, because it changes how the question reads. The version of this that has an answer is narrower than the version being asked. Narrow it and it becomes tractable; leave it broad and the thread will produce nine confident and incompatible replies.
NurseAsh_DET said:The version of this that has an answer is narrower than the version being asked.
Adding a me-too, because a thread of one person's experience is not much use. Posting only so the count is not one.
Sigma-Aldrich — Research-Grade Standards
Certified reference materials, analytical reagents, and research-grade standards for peptide verification. Trusted by laboratories worldwide.
Shop Reference StandardsNurseAsh_DET said:The version of this that has an answer is narrower than the version being asked.
Adding the part of the answer the thread has not reached. If two explanations both fit, the useful question is which one predicts something the other does not. That is answerable; arguing about which sounds more plausible is not.
Adding the numbers, since they settle part of this. The boring version of this is the one that works, and the boring version is: measure a baseline, change one variable, wait, measure again under the same conditions. Nobody wants that answer and it is still the answer.