WebAug 1, 2024 · Partial thromboplastin time (PTT) ... APTT, PTT: Specimen: 3 ML Whole Blood In 1 Blue Top (Sodium Citrate) Tube. Mix Thoroughly By Inversion. Stability Room: 2 hours: Stability Refrigerated: 4 hours: Stability Frozen: 2 weeks: Method: Photo-Optical Clot Detection: Download Report: Download Report: WebSpecimen Stability Information. Specimen Type: Plasma. Room Temp: 4 Hours. Note: Whole blood that remains capped and unspun is stable for up to 4 hours when stored at room temperature (18 – 24°C). Frozen plasma is stable 2 weeks @ -20°C and 12 months @ -70°C. Blue top tubes for coag assays must not be refrigerated or placed on ice.
Activated Partial Thromboplastin Time (APTT) Test Purpose, …
Webinstructions for specimen requirements and quality control requirements. PT and APTT: The PT, INR, and Activated Partial Thromboplastin Time (APTT) tests are common coagula … WebSpecimen Stability Information. ... The activity of coagulation factor V (labile factor) typically may be 10% to 20% lower in frozen-thawed plasma specimens than in fresh specimens, even under optimum conditions of processing and transportation, or may be even lower if these conditions are suboptimal, and may lead to a falsely prolonged PT. ... eshop hbp
Prothrombin Time (PT) and Partial Thromboplastin Time …
http://d2xk4h2me8pjt2.cloudfront.net/webjc/attachments/257/3b65413-test-stability-charts.pdf WebCollection Processing Instructions. -Citrated Blue Top Tube (BTT) must be drawn to the fill line. -Completely invert tube three or four times to mix. Do Not Shake. -Centrifuge tube at 3000 rpm for 10 minutes or Stat Spin for 3 minutes at 8500 rpm with the brake OFF as soon. as possible after collection. -Perform testing within 4 hours of sample ... WebSpecimen Volume: 0.5 mL sodium citrate plasma. Stability: Centrifuged specimens at 2-4°C or at 18-24°C must be tested within 4 hours of specimen collection. Collection Instructions: Centrifuge immediately after draw. Forward promptly. If there is a delay in transport of >4 hours or if mailing time exceeds 4 hours, spin down, remove plasma ... eshop hcv