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Labcorp Oklahoma, Inc.
Test Directory


Index:

Abnormal PT/PTT Analyzer

Order Name PT PTT AN
Test Number: 1507500
Revision Date 02/27/2023
Test Name Methodology LOINC Code
Abnormal PT/PTT Analyzer
 
SPECIMEN REQUIREMENTS
Specimen Specimen Volume (min) Specimen Type Specimen Container Transport Environment
Preferred 37.5 mL See Instructions See Instructions See Instructions
Instructions Due to the national shortage of 3.2% sodium citrate blue top tubes - Note change in tubes to collect.
Please list the patient's anticoagulant on the "Coagulopathy Questionnaire Form" and submit with specimen or fax to 918-744-3236.
Please collect:
Seven 2.7mL Sodium Citrate 3.2% (Blue Top) tubes and
One 5mL Clot Activator SST - send refrigerated.
Each 2.7mL Sodium Citrate 3.2% (Blue Top) tube must be filled to the proper level, no hemolysis. Improperly filled tubes can give erroneous results.
Whole blood must be transported to lab immediately.
If testing cannot be started within 4 hours of collection the specimen must be double spun then 1.5mL plasma aliquot from each tube into individual plastic aliquot tubes and freeze. 
Do not pool aliquots together!

Coagulopathy Questionnaire Form
Double Spin Procedure
GENERAL INFORMATION
Testing Schedule Individual Test Dependant 
Expected TAT 5-10 Days  
Clinical Use This analyzer is designed to evaluate patients with an unexplained prolonged PT or PTT in whom there is no clinical history or strong clinical suspicion of either bleeding or thrombolytic tendency. A pathologist interpretation and patient focused report with summation of test results will be issued with each order.
Not recommended when patients are taking Pradaxa®, Xarelto® and Apixaban® See More Information. 
CPT Code(s)

Initial Testing

Test Name CPT Codes
LA-PTT 85705
Pathology Interpretation 80503
PT 85610
PTT 85730
 

Possible Additional Testing

Test Name CPT Codes
Cardiolipin G/M 86147 x2
Beta 2 Glycoprotein 86146 x2
DRVVT Screen 85613
DRVVT Mix 85613
DRVVT Confirm 85613
Factor 10 85260
Factor 11 85270
Factor 12 85280
Factor 2 85210
Factor 5 85220
Factor 7 85230
Factor 8 85240
Factor 9 85250
Fibrinogen 85384
Hepzyme 85525
Hexagonal Phase Phospholipid 85598
Mix PT 85611 x2
Mix PTT 85732 x2
Mix PTT-La 85732 x2
Heparin DI 85525
Con Coag 8539026
Liver Profile 80076
Platelet Count 85049
Quantitative D-Dimer 85379
Lab Section Coagulation