They can be stored at -20 C for up to two months. Prior to assay, allow the samples to come to room temperature and mix by gentle swirling or inverison. Do not attempt to thaw frozen specimens by heating them in a water bath. Lipemia may interfere with the assay. Lipemic samples must be clarified by ultracentrifugtation.
Hemolysis does lower the growth hormone result.
Hemolyzed samples should not be used for this assay. Reconstitute each vial by adding 7.7 mL of deionized Type I water. Mix by gentle inversion. Reconstitute each vial by adding 7.7 mL of deionized Type I water. Mix by gentle inversion.