/r/analyticalchemistry/

RSS

  • Blood-based approach for early pancreatic cancer detection based on lipid analysis
    by /u/Mountain-Echo-3108
    Hi everyone, I wanted to share a recently published research study exploring a blood-based approach for early pancreatic cancer detection (https://doi.org/10.1038/s43856-026-01445-5). Instead of measuring a single biomarker like CA 19-9, the method analyzes patterns of lipid molecules in blood using mass spectrometry. In this pilot study (488 participants), the model: • distinguished pancreatic cancer from healthy controls with >95% accuracy • detected early-stage tumors (T1/T2) with high sensitivity • performed better than CA 19-9 in this cohort • showed about 96% specificity in high-risk individuals This is still research and requires larger validation studies before any clinical use. I’m curious […]
  • Do you really need F1 class weights for analytical balances?
    by /u/Which_Lifeguard_864
    Our analytical balance has readability up to 0.1 mg, and I’m wondering if a 500 mg F1 weight is sufficient or if we should move to E2 class weights for better calibration accuracy. https://preview.redd.it/c6wrm0m648ng1.jpg?width=367&format=pjpg&auto=webp&s=e5309289fc74936a85a2c9ca31629eed2edd612f submitted by /u/Which_Lifeguard_864 [link] [comments]
  • Can you of you separate and utilize the r isomer in a research chemical?
    by /u/Standard_Hornet8596
    Like do you have lab equipment? I will pay around 300 submitted by /u/Standard_Hornet8596 [link] [comments]
  • Conferences for Analytical Chemist
    by /u/Firm-Distribution731
    submitted by /u/Firm-Distribution731 [link] [comments]
  • How do you calculate the preconcentration factor? (PF)
    by /u/Apacukafundaluka12
    Hi, I have a simple question about the preconcentration factor (PF) in extraction methods. I see it calculated in different ways .. sometimes from volume ratios, sometimes from concentrations, and sometimes from calibration slopes. What is the correct way to calculate it? Is the volume ratio enough, or should it be based on experimental data? Thanks in advance! submitted by /u/Apacukafundaluka12 [link] [comments]
  • My background shifted
    by /u/No_Combination_1211
    submitted by /u/No_Combination_1211 [link] [comments]
  • povidone-question
    by /u/Over-Big-8224
    submitted by /u/Over-Big-8224 [link] [comments]
  • US Based Kanna Alkaloids Analytical Testing
    by /u/phyto_dex
    submitted by /u/phyto_dex [link] [comments]
  • MassChromAAA
    by /u/Intelligent_Bench734
    Hey everyone! I wanted to ask if anyone here has experience with the MassChrom Amino Acid Analysis (Chromsystems) kit. We’ve been running it for quantitative amino acid analysis, but I’m hitting serious problems with the HPLC part. According to the manual, the column can be stored in Phase A for up to 3 days – but in my case, that seems totally untrue. After that kind of storage, my peaks become badly broadened (stretched by up to 1 min), and the column can’t be restored to its original performance. Even after flushing with Phase B, I couldn’t get it back […]
  • How Accurate Are Circulating Water Baths in Real Lab Conditions?
    by /u/Which_Lifeguard_864
    For those using circulating water baths regularly — how close do they stay to the set temperature over long runs? Any issues with temperature fluctuation or uneven heating? Trying to understand what to realistically expect. submitted by /u/Which_Lifeguard_864 [link] [comments]
  • Looking for free and easy software to create procedure illustrations for my first publication
    by /u/Apacukafundaluka12
    submitted by /u/Apacukafundaluka12 [link] [comments]
  • Chromatograph sitting in our lab — no idea what detector it has. Any ideas?
    by /u/Clear-Emu-347
    submitted by /u/Clear-Emu-347 [link] [comments]

Related Feeds