Laboratory Medicine

Test catalogue

Factor XIII Assay (Urea Clot Solubility)
Test Name Factor XIII Assay (Urea Clot Solubility)
Specimen Type / Requirements Container Type = Blue Tube (Sodium Citrate) Minimum Testing Volume = Full draw 9:1 Ratio (9 parts blood to 1 part anticoagulant)
Specimen Handling Collection Instructions: Must indicate anticoagulant status to avoid delay. For *in/outpatient* samples, refer to Factor XIII Antigen Test. *Referred-in:* patients can be tested without a hematology consult. Write your initials, date and time of collection on the collection label. Transportation: In/Outpatients: Send whole citrated blood at room temperature as soon as possible. Referred-in: Send frozen citrated plasma on dry ice. All samples must be sent to the Core Laboratory. Stability: Specimens are stable for 4 hours post collection at room temperature. Specimens which are not tested within 4 hours can be double-spun to remove the citrated plasma. The citrated plasma is stable at -20°C for up to two weeks or -70°C for up to six months. Sample Rejection Criteria:Clotted sample, grossly hemolyzed samples, unlabeled or samples with insufficient quantity will be rejected.
Required Documentation
Turnaround Time (TAT) Inpatient: 24hrs, Referred-in: 3 days	Test Utilization
Reference Value Normal: Presence of stable clot Abnormal: Complete dissolution of clot within 24hrs.
Test Code FXIII	Methodology Clot Based Assay
Testing Location SMH-Special Coagulation	Other information

Factor XIII Assay (Urea Clot Solubility)

Test Name

Factor XIII Assay (Urea Clot Solubility)

Specimen Type / Requirements

Container Type = Blue Tube (Sodium Citrate)

Minimum Testing Volume = Full draw

9:1 Ratio (9 parts blood to 1 part anticoagulant)

Specimen Handling

Collection Instructions: Must indicate anticoagulant status to avoid delay. For in/outpatient samples, refer to Factor XIII Antigen Test. Referred-in: patients can be tested without a hematology consult.

Write your initials, date and time of collection on the collection label.

Transportation: In/Outpatients: Send whole citrated blood at room temperature as soon as possible. Referred-in: Send frozen citrated plasma on dry ice. All samples must be sent to the Core Laboratory.

Stability: Specimens are stable for 4 hours post collection at room temperature. Specimens which are not tested within 4 hours can be double-spun to remove the citrated plasma. The citrated plasma is stable at -20°C for up to two weeks or -70°C for up to six months.

Sample Rejection Criteria:Clotted sample, grossly hemolyzed samples, unlabeled or samples with insufficient quantity will be rejected.

Required Documentation

Turnaround Time (TAT)

Inpatient: 24hrs, Referred-in: 3 days

Test Utilization

Reference Value

Normal: Presence of stable clot

Abnormal: Complete dissolution of clot within 24hrs.

Test Code

FXIII

Methodology

Clot Based Assay

Testing Location

SMH-Special Coagulation