| A | B |
|---|
| antiglycolytic | prevents breakdown or metabolism of blood sugar by blood cells |
| clot activator | enhances coagulation |
| increased surface area for platelet activation | silica particles, inert clays, thrombin |
| silica particles | substance in serum separator tubes and red top tubes |
| 15-30 minutes | time for blood to clot in SST tube |
| thixotropic gel | nonreacting synthetic substance in specific blood collection tubes |
| centrifugation | causes change in gel viscosity |
| between cells and serum or plasma | place where thixotropic gel settles after centrifucation |
| SSTs | gold, red/gray top tubes |
| PSTs | mint green or gray/green top tubes |
| PPTs | pearl top tubes |
| serum | liquid portion of spun down tube MINUS clotting factors |
| plasma | liquid portion of tube INCLUDING clotting factors |
| whole blood test | CBC |
| CPK or CK to check heart function | red top, gold, red/gray top tubes |
| trace element free tube | royal blue top tube |
| EDTA , heparin, no additive | additive options for royal blue top tube |
| order of draw | special sequence of tube collection |
| additive carryover, tissue thromboplastin, microorganisms | interferences in testing that order of draw minimizes |
| cross contamination or carryover | due to transfer of additive from one tube to the next |
| tissue thromboplastin | activates extrinsic coagulation pathway |
| clear or discard tube | drawn first if only coagulation tests are ordered |
| EDTA | most common additive that causes carryover problems |
| blood culture tubes | sterile and collected first |
| butterfly collection | clear or discard tube drawn to account for air in tubing when coag only test ordered |
| 9:1 | blood to additive ratio of coagulation tube |
| Stop Light Red, Stay Put, Green Light Go | order of draw acronym |
| Silly Ladies Love Green & Gray Roses | alternate order of draw when using a syringe |
| alternate order of draw for syringe | freshest and more microclot free |
