Sodium citrate 3.2% or 3.8% is dispensed for coagulation test. Blood and liquid additive ratio is 9:1. This tube could not be used as first tube to collection blood. Invert 5-6 times after blood collection.
| Material | Spec（mm） | Volume（ml） | Label | Shelf life（year） | Package |
| Glass | 13*75 | 2-4 | Paper label | 2 | 100/1800 |
| Glass | 13*100 | 5 | Paper label | 2 | 100/1200 |
| PET | 13*75 | 2-4 | Paper label/UV Printing | 1 | 100/1800 |
| PET | 13*100 | 5 | Paper label/UV Printing | 1 | 100/1800 |
| PET+PP | 13*75 | 2、3 | Paper label/UV Printing | 1 | 100/1800 |
