Samples must be removed from clot within one hour for storage or transport. Samples collected in gel barrier tubes must be removed from the primary tube prior to transporting to Marshfield. Do not send the primary collection tube.
For plasma samples only: - Sites with centrifuges capable of reaching a speed of 4,400g can centrifuge the collection tube for 3 minutes. - Sites with standard centrifugation must centrifuge the collection tube for 10 minutes at 1900g.
a. HCG-Pre, Qnt
b. HCG, Quantitative