Which analyte is affected by lipemia/turbidity?

Prepare for the CAMLPR Chemistry Test. Enhance your understanding with interactive quizzes, flashcards, and detailed explanations. Boost your confidence and readiness for exam success!

Lipemia and turbidity interfere with many tests that rely on optical measurement, because light scattering by the lipid droplets distorts the signal the instrument reads. Testosterone testing is often done with immunoassays or other photometric methods that depend on detecting a colorimetric or chemiluminescent signal. When the sample is turbid, that optical signal can be unreliable, leading to inaccurate testosterone results.

Electrolytes like sodium, potassium, and magnesium are typically measured with ion-selective electrodes or other methods that are less affected by turbidity, especially when direct measurement techniques are used. So, among the given analytes, testosterone is the one most susceptible to lipemic interference.

If a lipemic sample is encountered, labs may clear lipids by ultracentrifugation or use methods validated to tolerate lipemia, and re-measure if needed.