HEMOSTASTIS SPECIMEN STORAGE TIMES AND TEMPERATURES

Question 1

PRP

Answer 1

Platelet-rich Plasma

Question 2

PT

Answer 2

Prothrombin time

Question 3

PTT

Answer 3

Partial thromboplastin time

Question 4

UFH

Answer 4

unfractionated heparin

Question 5

(PT with no UFH)
Specimen Stability:
Temperature:

Answer 5

(PT with no UFH)
Specimen Stability: Test within 24hr, maintain upright and sealed
Temperature: 15-25degC (can be at room temp)

Question 6

(PTT with no UFH, Factor Assays, Whole blood aggregometry)
Specimen Stability:
Temperature:

Answer 6

(PTT with no UFH, Factor Assays, Whole blood aggregometry)
Specimen Stability: Test within 4hr, maintain upright and sealed
Temperature: 15-25degC (can be at room temp)

Question 7

(PTT for monitoring UFH, PT when UFH is present)
Specimen Stability:
Temperature:

Answer 7

(PTT for monitoring UFH, PT when UFH is present)
Specimen Stability: Centrifuge to separate plasma within 1hr, test within 4hr
Temperature: 15-25degC (can be at room temp)

Question 8

(Optical platelet aggregometry using PRP)
Specimen Stability:
Temperature:

Answer 8

(Optical platelet aggregometry using PRP)
Specimen Stability: Wait for 30 min after centrifugation, test within 4hr of collection
Temperature: 15-25degC (can be at room temp)

Question 9

(Storage in household freezer)
Specimen Stability:
Temperature:

Answer 9

(Storage in household freezer)
Specimen Stability: 2 weeks
Temperature: -20degC

Question 10

(Storage for 6 months)
Specimen Stability:
Temperature:

Answer 10

(Storage for 6 months)
Specimen Stability: 6 months or indefinite
Temperature: -70degC