Test Directory

For the management of patients with platelet refractoriness.

Physician consultation with HNL Lab Medicine Transfusion Medicine Physician prior to specimen collection is recommended.

This test is for patients known to be refractory to platelet transfusions. This testing is sent to a reference laboratory for Capture-P Ready Screen and is used by Blood Bank to determine whether the platelet refractoriness may be immune-mediated, and if crossmatched platelets may be beneficial. This test is NOT recommended for the diagnosis of idiopathic thrombocytopenic purpura (ITP).

Preferred Specimen Type: Whole Blood

Preferred Collection Container: 2 Pink Top (EDTA)

Alternate Collection Container: 4 Lavender Top (EDTA)

Desired Specimen Volume: 6 mL

Minimum Acceptable Volume: 3 mL

Other Instructions: Minimum volume for infants <4 months is 4 full Microtainer, Lavender Top (EDTA)

The specimen tube shall be properly labeled with the following 3 independent identifiers for inpatients and outpatients:

1. Patient's full name
2. Date of birth
3. Medical record number

The labels shall also include the following verifiers:

1. Date and time of collection
2. Initials/tech code of phlebotomist

Exception Criteria:

• Trauma -ED patient: Patients with unknown name and date of birth, medical record number and temporary name are acceptable.
• Good Shepherd Rehab: Typenex band ID is used as an additional patient identifier

i. Transport to the laboratory at room temperature within 24 hours of collection

ii. Transport to the laboratory refrigerated past 24 hours of collection

Improperly labeled specimens