Cryofibrinogen

Single-analyte tests

• Cryofibrinogen, Qualitative 080317

  Plasma · Fasting not stated · Turnaround 3 - 5 days

  Method and collection

  Method

  Visual observation of refrigerated samples

  Collection

  Specimen must be drawn in a prewarmed tube and kept at 37°C. Separate plasma from cells immediately, and transfer the plasma into a clean transport tube. Label transport tube "Prewarmed."

  Reference notes

  None detected

  Labcorp catalog page

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Single-analyte tests

• Cryofibrinogen 376

  Plasma · Fasting required · Turnaround Set up: Sun-Fri

  Method and collection

  Method

  Cold Precipitation

  Preparation

  Overnight fasting is required

  Collection

  Collect blood into three 3.2% sodium citrate (light blue- top) tubes or three EDTA (lavender-top) tubes and place immediately in a 37° C water bath, oven, incubator, heat block or heel warmer(s) for 1 hour. It is very important that the specimen remain at 37° C until after separation of plasma from red cells. Centrifuge the specimen for 10 minutes at 1600 RCF (G) or at top speed utilizing one of the 3 options below: 1.) In a "warm" centrifuge at 37° C. 2.) In a bench-top centrifuge placed in a "warm room" at 37° C. 3.) At room temperature, in a bench-top centrifuge prewarmed by running it for 10 minutes at 1600 RCF (G) or at top speed. After centrifuging, decant plasma into a screw-cap vial. Transport at room temperature. Do not refrigerate or freeze. ⁠⁠⁠⁠⁠⁠⁠ Note: If the sample is not kept at 37° C during all processing steps, the cryoprecipitate, if present, can precipitate out of solution and be lost during the centrifugation process and result in a false negative result. Note: No tests can be added or poured off this tube; for cryofibrinogen evaluation only.

  Reference notes

  Negative

  Quest Diagnostics catalog page

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