Ionized calcium is one test that needs the sst tube.
Either an SST or Red-top tube.
An SST tube will contain serum once its been centrifuged. SST stands for serum separator tube. It will separate the serum from the other blood components.
Light green tube, with sodium heparin.
RED
SST
RED
Serum
SST
Sst
SST
Sst tube plasma.. Red tube/with ad