A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # |
Cryofibrinogen
Test CodeCPT Codes
82585
Preferred Specimen
6 mL plasma
Patient Preparation
Overnight fasting is required.
Minimum Volume
3mL
Other Acceptable Specimens
Instructions
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, or 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.
Do not refrigerate or freeze.
Note: No tests can be added or poured off this tube; for cryofibrinogen evaluation only.
Transport Container
Transport Temperature
Room temperature
Specimen Stability
Room temperature: 7 days Refrigerated: Unacceptable Frozen: Unacceptable
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Specimens received refrigerated or frozen • Heparinized plasma • Gross lipemia • Gross hemolysis
Methodology
Cold Precipitation
Setup Schedule
Set up: Sun-Fri; Report available: 3 days
Reference Range
See Laboratory Report
Clinical Significance
Performing Laboratory
Quest Diagnostics Nichols Institute 14225 Newbrook Drive Chantilly, VA 20153
Last Updated: February 22, 2012