Epic Code LAB321 Mixing Studies, PT
Test Name Alias
Mixing Studies PT | 4118
Interface Order Alias
10463
Clinical Information
Used to investigate a prolonged prothrombin time, factor deficiency or factor inhibitor.
Icons & Photos
Collection Instructions
Specimen Collection: Blood
Container(s): 3.2% Na Citrate Tube (blue top)
Preferred Volume to Collect: 8.1 mL (3 full 2.7 mL tube)
Minimum Volume to Collect: 5.4 mL (3 full 1.8 mL tube)
Capillary collect ok: No
Microtainer acceptable: No
Collection Instructions:
-
Detailed instructions (link): Anticoagulant Correction for High Hematocrit
-
Detailed instructions (link): Blue Citrate Tube
- Specimen should be processed within 1 hour – See Processing Instructions below.
Processing Instructions (Laboratory, Outpatient or Off-site collection)
Processed Specimen: Platelet Poor Plasma
Centrifuge/Spin: Yes
Aliquot: Yes
Processing Instructions:
- Detailed instructions (link): Preparing Platelet Poor Plasma
- Separate plasma into 4 - 6 aliquots, minimum of 0.5 mL each.
- Freeze aliquots in plastic transport tubes immediately.
Transport Temperature:
- Ambient (up to 1 hour in whole blood state)
- Frozen (plasma only >1 hour)
Rejection Criteria
- Hemolysis
- Specimen has been thawed
Specimen Stability
Ambient: Up to 1 hour in whole blood state
Frozen: platelet poor plasma aliquoted and frozen within 1 hour of collection (2 months)
Laboratory Retention: 2 months
Reflex Information
Test Frequency
Available Monday-Thursday, usual TAT 1-4 days.
Reference Range
9.5 - 12.0 seconds
Pathologist interpretation reported with results if indicated.
Performing Department
COAGULATION
Performing Department Laboratory Location
Spectrum Health Regional Laboratory, Grand Rapids, MI
Methodology
Prothrombin based clot assay
CPT
85611
CDM Code
4094118
Epic Test ID
1230100948
Beaker LOINC
PROTHROMBIN TIME: 5902-2
PROTIME MIXING STUDY: 50008-2
Mayo Access Code
SHO4118
Reviewed Date
10/11/2021
Beaker Names
Beaker Procedure Name: EQUAL MIX,PT/INR
Beaker Display Name: PT Mixing Studies
BEAKER TEST NAME: MIXING STUDIES, PT
BEAKER TEST REPORT NAME: Mixing Studies, PT
Beaker Synonyms
No synonym on file
Beaker Collection and Specimen Handling
BEAKER COLLECTION: +(1)S10/POx3/F
Beaker Location, Container and Temperature
BW COAGULATION: BLUE TOP TUBE