Plasminogen activator inhibitor-1, activity-994

Test info

  
Plasminogen activator inhibitor-1, activity
  
994
  
LAB994
  
MSO
  
PAI-1 activity

Specimen

  
Sodium citrate (Na cit) plasma
  
  
1.0 mL
  
0.5 mL
  
  • NaCitrate tubes must be filled to provide proper blood to anticoagulant ratio.
  • If the patient's hematocrit exceeds 55%, the volume of citrate in the collection tube must be adjusted.
    • Adjustment Information:

High Hematocrit Samples. Patients with elevated hematocrits have a relatively low amount of plasma for a given whole blood (collection) volume. This tends to increase the plasma citrate concentration effectively. If the patient has a known hematocrit >55%, the amount of citrate in the collection tube must be decreased according to the formula below. The equation in CLSI H21 is as follows: C = (1.85 x 10−3) (100−Hct) (Vblood) Where: C is the volume of citrate remaining in the tube. Hct is the patient's hematocrit. V is the volume of blood added to the evacuated tube.

  • Example:

Patient hematocrit = 60% Total volume = 5 mL (standard citrated plasma collection tube volume) C = (0.00185) x (100-60) x 4.5 C = (0.00185) x 180 (or 40 x 4.5) C = 0.333

  • Immediately following collection, mix sample thoroughly by gently inverting 8 - 10 times to prevent clotting
  
  1. Spin
  2. Taking care not to disturb the cells, transfer plasma to a Screw-cap polypropylene frozen transport vial/tube - 4mL (LabCorp) , labelled as Na cit plasma
  3. Freeze immediately
  

Frozen (strict) - 11 days

Ambient - NO

Refrigerated - NO

Performance

  
Viracor Eurofins via LabCorp (146787): R-NX
  

Enzyme-linked Immunosorbent Assay (ELISA)

Clinical and Interpretive info

  

0 - 27 IU/mL

Billing

  
85415

Tracking

  
09/12/2007
  
09/14/2018