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UW Health SMPH
American Family Children's Hospital

UW Hospital and Clinics Lab Test Directory

Test Name: Cryofibrinogen

Test Code(s): MISC / RMISC

CPT Code(s): 82585

Test Description: Link:

Testing Site: Testing will be sent to an approved reference laboratory.

Days Performed: Daily.

Turnaround Time: Stat: Not available stat.
Routine: 3 - 6 days.

Specimen Requirements

Specimen: Blood

Collection Instructions: BEFORE COLLECTING SPECIMEN, pre-warm a light blue (sodium citrate)tube (e.g. in an infant heel warmer).  Have another infant heel warmer on hand to deliver the blood to the laboratory after collection.  Keep specimen at 37C by wrapping a hot pack (infant heel warmer) around the tube immediately after collection. Transport specimen to UWHC Core Laboratory (B4/220) within 10 minutes of collection.  

Collection Container: Preferred: 2 lt. blue top tubes (3.2% NaCitrate)

Collection Volume: Preferred: 6 mL
Pediatrics: 2 mL

Sample Analyzed: Plasma

Volume Required: Preferred: 3 mL
Pediatrics: 1 mL

Specimen Processing: IMPORTANT:  Keep whole blood specimen at 37C during entire processing procedure.  Place light blue top in 37C incubator while warming centrifuge to 37C.  Spin specimen at 3000 rpm for 10 minutes.  Transfer plasma to labeled ARUP Standard Transport Tube. Keep plasma at 20-25C

Specimen Transport: Transport whole blood specimen to UWHC Core Labortory (B4/220) within ten minutes of collection-keep specimen at 37C by wrapping tube in a hot pack (infant heel warmer).  Specimen MUST be processed prior to transport if coming from outreach location.
Transport processed specimen at room temperature (20-25C.)  DO NOT REFRIGERATE.

Unacceptable Criteria: Refrigerated or frozen specimens.  Heparinized, lipemic or grossly hemolyzed specimens.

Stability: Ambient: 1 week
Refrigerated: Not acceptable
Frozen: Not acceptable


Reference Interval:

Negative at 72 hours.

Test Limitations:

Quantities less than 3 mL may affect the sensitivity of the assay.

Additional Information:

Proper collection and transport of specimen is critical to the outcome of the assay.

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