Phosphatidylserine/Prothrombin (PS/PT) Antibody (IgG)

Test code

11443

CPT code(s)*

83516

In-home collection is not available in your area through Quest Mobile.

Clinical significance

Phosphatidylserine/Prothrombin (PS/PT) Antibody (IgG) - Antiphospholipid Syndrome (APS) is an acquired autoimmune thrombophilia characterized by thrombosis (venous and/or arterial or microvascular) and/or pregnancy loss or morbidity in association with persistent positivity of a heterogenous group of autoantibodies known as anti- phospholipid antibodies (APL). The international laboratory consensus criteria for the diagnosis of APS includes a positive lupus anticoagulant and/or moderate to high positivity for IgG/IgM Cardiolipin and Beta-2-Glycoprotein I antibodies. Although not included in the criteria classification for APS diagnosis, antibodies directed against a…

Test resources

Test FAQ

Phosphatidylserine-Prothrombin Antibodies, IgG, IgM

Details

Test details

Methodology

Immunoassay (IA)

Alternative name(s)

PSPT IgG Antibodies,aPS/PT IgG

Specimen requirements
Patient preparation	None Specified
Preferred specimen(s)	1 mL platelet-poor plasma collected in a 3.2% sodium citrate (light blue-top) tube
Alternative specimen(s)	1 mL serum collected in a plastic transport tube
Minimum volume	0.5 mL
Collection instructions	Platelet-poor plasma: Centrifuge light blue-top tube 15 minutes at approx. 1500 x g within 60 minutes of collection. Using a plastic pipette, remove plasma, taking care to avoid the WBC/platelet buffy layer and place into a plastic vial. Centrifuge a second time and transfer platelet-poor plasma into a new plastic vial. Plasma must be free of platelets (<10,000/mcL). Serum: Completely fill the Vacutainer and allow the blood to clot in an upright position for at least 30 minutes, but not longer than 1 hour before centrifugation. Transfer the serum to a plastic transport tube.
Transport container	Plastic vial
Transport temperature	Room temperature
Specimen stability	Room temperature: 7 days Refrigerated: 30 days Frozen: 30 days
Reject criteria	Gross hemolysis • Grossly lipemic

Reference range(s)

≤30 U

LOINC® codes

The Result and LOINC® information listed below should not be used for electronic interface maintenance with Quest Diagnostics. Please contact the Quest Diagnostics Connectivity Help Desk for more information at 800-697-9302.

NOTE: The codes listed in the table are not orderable Test Codes

Result code	Result name	LOINC code	Component name
86031398	PS/PT Ab (IgG)	85359-8	Phosphatidylserine-prothrombin complex Ab.IgG

Performing lab & setup schedule

Performing laboratory

Quest Diagnostics Nichols Institute
14225 Newbrook Drive
Chantilly, VA 20153

Setup schedule

Set up: Tues, Thurs, Sat; Report available: 1-3 days

Reference ranges are provided as general guidance only. To interpret test results use the reference range in the laboratory report.

*The CPT codes provided are based on AMA guidance and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.

This material contains content from LOINC® (http://loinc.org). The LOINC Table, LOINC Table Core are copyright © 1995-2019, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee and is available at no cost under the license at http://loinc.org/license.

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