Test Catalog

Test ID: PLABN    
Platelet Antibody Screen, Serum

Testing Algorithm Delineates situations when tests are added to the initial order. This includes reflex and additional tests.

See Platelet Antibody Testing Algorithm in Special Instructions.

Specimen Type Describes the specimen type validated for testing

Serum Red

Advisory Information

For neonate testing, consider sending a maternal specimen instead of a neonate specimen as unbound platelet antibodies may not be detected in the neonate serum.

Necessary Information

If ordering electronically, answer all Prompt Questions for timely result reporting:

1. Reason for request is required for result interpretation.

a. Use provided diagnosis options if appropriate. If specific diagnosis is unknown select the generic answer of Alloimmune Thrombocytopenia.

b. Record only the diagnosis pertaining to this test.

c. Record diagnosis description instead of code.

2. Indicate if patient has had intravenous immunoglobulin (IVIg) therapy in the last month: Yes or No

3. Indicate if the patient has received a platelet transfusion within 72 hours of collection (Transfused platelets will interfere with assay): Yes or No

4. Record the most recent platelet count, if available. If not available, enter "Not Available." Platelet count conversion: 93 x10(9)/L = 93 x10(6)/mL = 93 x 10(3)/microliter

Specimen Required Defines the optimal specimen required to perform the test and the preferred volume to complete testing

Patient Preparation: Do not collect within 72 hours of a platelet transfusion. Transfused platelets will interfere with this assay.

Container/Tube: Red top

Specimen Volume: 1.5 mL

Collection Instructions: Serum should be separated from red cells prior to shipping.

Special Instructions Library of PDFs including pertinent information and forms related to the test


Specimen Minimum Volume Defines the amount of sample necessary to provide a clinically relevant result as determined by the Testing Laboratory

0.5 mL

Reject Due To Identifies specimen types and conditions that may cause the specimen to be rejected

Gross hemolysis Reject

Specimen Stability Information Provides a description of the temperatures required to transport a specimen to the performing laboratory, alternate acceptable temperatures are also included

Specimen TypeTemperatureTimeSpecial Container
Serum RedFrozen (preferred)365 days
 Refrigerated 48 hours