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Epic Code LAB493 Protein S Antigen Free and Total

Important Note

There is currently a nationwide shortage of this tube. Please take steps to ensure specimen integrity to reduce recollection. Specimen Tube Shortage (link)

Patient should be off warfarin (Coumadin) for at least 2 weeks, or on a stable dose of warfarin for at least 2 weeks before drawing sample.

 

Test Name Alias

Protein S Ag | 4175 | Protein S Antigen

Interface Order Alias

10461

Specimen Requirements

Specimen Type: Platelet Poor Plasma
Container/Tube: Blue top (3.2% Sodium Citrate)
Volume: 2.7 mL Whole Blood (Tube must be full) 2 tubes required

Minimum volume: 2 - 1.0 mL aliquots

Collection Instructions: Centrifuge and remove plasma within 1 hour of collection. Freeze aliquots in plastic transport tubes immediately

Special Instructions

Patient should be off warfarin (Coumadin) for at least 2 weeks, or on a stable dose of warfarin for at least 2 weeks before drawing sample.

Specimen cannot be hemolyzed or clotted.

 

To obtain a coagulation plasma sample, centrifuge the capped specimen tube at a speed and time required to consistently produce platelet-poor plasma (platelet count < 10,000/uL). The centrifugal speed and duration to accomplish this must be established in the individual laboratory. Our laboratories use centrifuges at 3,000 to 4,000 rpm for ten minutes or higher speed and shorter duration centrifuges. When removing plasma to send for coagulation testing, it is important NOT to go all the way down to the cells. Leave a minimum 1/4 inch of plasma sitting on cells. This layer contains the platelets which were separated from the plasma during spinning. The platelets interfere with coagulation testing so we leave this layer undisturbed.

Specimen Stability

Ambient: 1 hour

Frozen: 2 months

Test Frequency

Sent to reference laboratory. Usual TAT 7-10 days.

Performing Department

REFERRAL SEND OUTS

Performing Department Laboratory Location

Send Out to Versiti Wisconsin Ref. Lab

CPT

85306,  85305

CDM Code

80101922, 80101926

Epic Test ID

1230101091

LOINC

Protein S Antigen Total: 5892-5

Protein S Antigen Free: 4677-1

Beaker LOINC

Send Out test to Versiti Wisconsin , LOINC Unavailable

Mayo Access Code

SHO4175

Reviewed Date

1/24/2020

Beaker Names

Beaker Procedure Name: PROTEIN S ANTIGEN FREE AND TOTAL
Beaker Display Name: Protein S Antigen Free and Total
BEAKER TEST NAME: PROTEIN S ANTIGEN FREE AND TOTAL
BEAKER TEST REPORT NAME: Protein S Antigen Free and Total

Beaker Synonyms

No synonym on file

Beaker Collection and Specimen Handling

BEAKER COLLECTION: +(1)S10/POx2/F

Beaker Location, Container and Temperature

VERSITI WISCONSIN FROZEN: BLUE TOP TUBE