Geisinger Medical Laboratories/Geisinger Proven Diagnostics Test Catalog

Test Name: Sunquest Test Code Epic Procedure Code Or ID CPT Code:  

PT/INR

ORDERING INFORMATION:
Sunquest Test Code:
PTINR      Geisinger Epic Procedure Code: 85610.02         Geisinger Epic ID: 14539

SPECIMEN COLLECTION
Specimen type:
Platelet-free plasma
Preferred collection container:
Alternate Collection Container:
Other size blue-top (3.2% sodium citrate) tubes (e.g., 1.8 mL, 4.5 mL)
Specimen required:
1 mL aliquot of plasma.
Special notes:
Do not draw blood from a heparinized line. Avoid contaminating the sample with tissue thromboplastin or heparin. Venipuncture must be performed with no trauma. If blood is drawn from an indwelling catheter, flush with 5 mL of saline and discard the first 5 mL of blood collected. If blood is drawn with a butterfly device, draw a discard tube first to remove air from tubing.

SPECIMEN PROCESSING
Specimen processing instructions:
If specimen will be analyzed within 24 hours: Whole blood can be submitted.
If specimen will be analyzed after 24 hours: Centrifuge the citrated blue-top tubes at designated speed and time to obtain platelet-poor plasma (<10,000/µL). Using a plastic pipette, remove 1 mL of plasma and transfer to a plastic aliquot tube and label with patient's name and a second patient identifier (e.g., date of birth, medical record number). 
Transport temperature:
If analyzed within 24 hours, store and transport whole blood at room temperature. If specimen analysis will be beyond 24 hours, remove plasma and freeze. Transport frozen.
Specimen stability:
Whole blood: 24 hours at room temperature.
Plasma: -20°C for 30 days, -70°C for 6 months.
Rejection criteria:
Clotted, overfilled or underfilled tubes. Stability limits exceeded. HCT >55. HCT > 55 requires rejection, reorder in LIS, and recollection with proper adjustment of anticoagulant.

TEST DETAILS
Reference interval:
Varies with lot number of reagent.
PT 11.5 - 14.6 sec. INR 0.81-1.11
Critical values/courtesy alerts:
INR greater than 4.99.
Additional information:
This test can be ordered stat on patients wtih severe bleeding. Contact the pathologist on call or the Hematology Laboratory. Do not store plasma at 2-8°C due to Factor VII potential for activation.
CPT code(s):
85610
Note: The billing party has sole responsibility for CPT coding.  Any questions regarding coding should be directed to the payer being billed.  The CPT codes provided by GML are based on AMA guidelines and are for informational purposes only.
Test includes:
PT seconds, INR
Methodology:
Mechanical Clot-Based
Synonyms:
INR
Protime/INR
Prothrombin Time
Prothrombin Time with International Normalized Ratio
Clinical significance:
Used to monitor dosing of the anticoagulant Coumadin and to assess the extrinsic pathway of the coagulation system.
Doctoral Director(s:)
Michelle Grant DO    
Review Date: 04/29/2019

Performing Locations

Geisinger Medical Center

Performing laboratory: Coagulation
Technical Lead: Margaret Knowles-Tuchman
Frequency: Daily, all shifts
Performed stat? Yes

Geisinger Wyoming Valley Medical Center

Performing laboratory: ATL+
Technical Lead: Amanda Mika    
Frequency: Daily, all shifts    
Performed stat? Yes

Geisinger Shamokin Area Community Hospital

Performing laboratory: Coagulation
Technical Lead: Kelly Alleman    
Frequency: Daily, all shifts    
Performed stat? Yes

Geisinger Bloomsburg Hospital

Performing laboratory: Hematology
Technical Lead: Sophie Rockwell  
Frequency: Daily, all shifts    
Performed stat? Yes

Geisinger Community Medical Center

Performing laboratory: Hematology
Technical Lead: Renee Bordo, Robert Furcon  
Frequency: Daily    
Performed stat? Yes

Geisinger Lewistown Hospital

Performing laboratory: Hematology
Technical Lead: Lisa Sheaffer  
Frequency: All shifts    
Performed stat? Yes

Geisinger Holy Spirit Hospital

Performing laboratory: ATL+
Technical specialist: Hadeel Naghnaghieh    
Frequency: Daily, all shifts    
Performed stat? Yes

Geisinger Jersey Shore Hospital

Performing laboratory: Coagulation
Technical specialist: Beth Emert    
Frequency: Daily, all shifts    
Performed stat? Yes

Geisinger South Wilkes-Barre

Technical specialist: Bernadette Johnson    
Frequency: Daily, all shifts    
Performed stat? Yes
Locations  |    Search  |    Site Map |   Contact Us
©2000-2019 Geisinger Health System.   All rights reserved.
*GMC - Geisinger Medical Center; GWV - Geisinger Wyoming Valley Medical Center; GSACH - Geisinger Shamokin Area Community Hospital; GBH - Geisinger Bloomsburg Hospital;
GCMC - Geisinger Community Medical Center (Scranton); GLH - Geisinger Lewistown Hospital; GHS - Geisinger Holy Spirit; GJSH - Geisinger Jersey Shore Hospital,
GSWB - Geisinger South Wilkes-Barre