PROPRIETARY INFORMATIONCONFIDENTIAL MATERIALAssays/Reagents Not for Customer Distribution128 AEROSET ® System Troubleshooting Guide94816-107—November 2004Direct LDL (MULTIGENT ® )Sample Storage and Stability• Samples should not be frozen at -20°C.• Samples stored at -25°C for 1 month showed a – 14% bias.• Samples stored at -80°C for 3 months showed a 2% bias.Reagent Storage and Stability• Do not freeze reagents.• Protect reagents from light.Calibrator Storage and Stability• Do not refreeze calibrator.• The calibrator should not be frozen at -20°C.• The calibrator concentration changes with each lotnumber and is listed on the label.• The calibrator is reconstituted with 1 mL DI water,allowed to stand for 5 minutes, and swirled untildissolved. Due to the low volume of the calibrator (1 mL),a 1 mL Class A volumetric pipette should be used.• Do not shake the calibrator. Shaking can cause calibrationinconsistencies due to bubbles in the vial.• The calibrator is traceable to the National ReferenceSystem for Cholesterol, NRS/CHOL.• The calibrator is supplied with the reagent, and cannot beordered separately.
