| Preferred specimen: |
One full unopened light blue top tube (3.2% sodium citrate). Light blue top tube must be completely filled to ensure proper blood to anticoagulant ratio (9:1). Mix tube by gentle inversion 3-6 times immediately after collection. Do not uncap tube. If obtaining specimen with a butterfly, draw a waste tube first and discard. |
| Minimum specimen: |
90% filled light blue top tube (3.2% sodium citrate) or 0.5 ml plasma. |
| Acceptable specimen: |
NON-HEPARINZED PATIENTS: Do not centrifuge. Do not remove top from tube. Send unopened tube same day.
IF PATIENT IS HEPARINZED: Centrifuge specimen within one hour of collection. Transfer top half of plasma to plastic transport tube and FREEZE immediately. Transport specimen FROZEN. |
| Unacceptable specimen: |
Gross hemolysis, clotted specimen, improper blood to citrate ratio, specimen collected in tube other than 3.2% citrate. |
| Transport temp: |
Room temperature for light blue top tube. Send unopened tube to lab within 24 hours. Frozen for plasma. |
| Methodology: |
Photo Optical Clot Detection |
| Unit Code: |
202360 |
| Ref Range: |
28.0-40.0 seconds |
| Reported: |
Within 24 hours |
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