| Test to Order |
Tube |
Volume |
Special Considerations |
| Protein C "function" |
Blue-top |
Use 5 mL, fill exactly to line |
Measure of protein actvity, not protein level. |
| Protein S "free" |
Blue-top |
Use 5 mL, fill exactly to line |
Send on ice if sample will sit more than 30 minutes. |
| Anti-thrombin III (measuring % activity) |
Blue-top |
Use 5 mL, fill exactly to line |
If blood clots in tube, obtain subsequent sample by first drawing up
anticoagulant into syringe, then replacing fluid into tube, then using
now-coated syringe to draw sample. |
| Anticardiolipin Ab |
Blue-top |
Need 6 mL, fill 5 mL tube completely |
Send on ice to control lab. |
| Factor V Leiden Mutation (note: not factor V level) |
Lavender-top (EDTA) |
if possible, fill 5 mL tube to purple line (minimum = 1 mL) |
|
| Prothrombin Mutation |
Lavender-top (EDTA) |
if possible, fill 5 mL tube to purple line (minimum = 1 mL) |
|
| Homocysteine Level |
Green-top |
2 mL minimum |
Send on ice |
