08/09/2026
๐ฅ ๐๐ข๐ฉ๐๐ฆ๐ข๐ ๐๐๐ฆ๐ฉ๐ฅ๐ ๐๐ข๐ฅ๐๐ฆ๐ฆ๐! ๐ฅ
Weโve all seen itโthat milky-white, grossly lipemic sample arrives in the lab. The cobas c 303 throws a massive L-Index flag ๐ฉ for Sodium, ALT, and Creatinine.
What do you do? Immediately reject it and demand a fresh redraw? STOP! ๐
Drawing a fresh sample usually results in the exact same milky fluid because lipemia is often a clinical condition, not just a post-meal accident. Instead, the solution is Ultracentrifugation (or high-speed spinning at 10,000+ ร g for 15 mins).
But what happens to the data when you test the clear layer underneath? Let's look at the science:
# # ๐ The Cleared-Sample Data Cheat Sheet:
๐งช ๐๐จ๐๐ข๐ฎ๐ฆ
โก๏ธ PERFECTLY CORRECTED: Lipids take up volume, causing fake low sodium values (Pseudohyponatremia) on indirect ISE analyzers. Data shows that removing the lipid layer restores the true aqueous volume, bringing the sodium result back to 100% accuracy.
๐๐๐ & ๐๐ซ๐๐๐ญ๐ข๐ง๐ข๐ง๐
โก๏ธ COMPLETELY FIXES THE ERROR: Lipemia scatters light at 340 nm, blinding the analyzer's optics Data proves that once centrifugation clears the turbidity, the optical path is opened, and your ALT/Creatinine kinetic readings match true patient baselines.
๐๐ข๐ฉ๐ข๐ ๐๐ซ๐จ๐๐ข๐ฅ๐๐ฌ โก๏ธ DO NOT RUN! โ If you test the cleared fluid for Triglycerides or Cholesterol, your data will be completely ruined (near zero), because you just physically spun the lipids out of the sample!
๐ฌ MLT Community Discussion:
How does your lab handle lipemic samples? Do you use an airfuge, high-speed microcentrifuge, or lipoclear reagents? Drop your workflow in the comments below! ๐
