J Vet Sci.  2010 Jun;11(2):121-124. 10.4142/jvs.2010.11.2.121.

Effect of storage conditions on prothrombin time, activated partial thromboplastin time and fibrinogen concentration on canine plasma samples

• Piccione G
• Casella S
• Giannetto
• Giudice E

• KMID: 1110858
• DOI: http://doi.org/10.4142/jvs.2010.11.2.121

Abstract

The present study was to assess the effect of storage conditions on prothrombin time (PT), activated partial thromboplastin time (aPTT) and fibrinogen concentration in blood samples of healthy dogs. Thirty-five dogs of various breeds were included in the study. Citrated blood samples were obtained and plasma was divided into four aliquots to assess selected clotting parameters by means of a coagulometer. The first aliquot was analysed within 1 h after collection, while the remaining 3 were stored at 8degrees C for 4, 8 and 24 h, respectively. One-way repeated measures analysis of variance documented a significant decreasing effect on PT at 24 h compared to 8 h and on fibrinogen concentration after 8 and 24 h compared to sampling time and at 4 and 24 h compared to 8 h post sampling. In conclusion, the results of this study indicate that only fibrinogen appears prone to significant decrease. In fact, aPTT is not substantially affected by refrigeration for at least 24 h post sampling and PT showed a statistical difference that does not necessary indicate biological significance as the results obtained were within reference intervals for the dog.

Keyword

thromboplastin time; dog; fibrinogen; prothrombin time; storage conditions

MeSH Terms

Animals
Blood Preservation/methods/*veterinary
Dogs/*blood
Fibrinogen/*analysis
Partial Thromboplastin Time/*veterinary
Plasma/chemistry
Prothrombin Time/*veterinary
Specimen Handling/methods/*veterinary
Time Factors

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