ARUP's Laboratory Test Directory

Platelet Antibodies, Indirect with Reflex to Identification : 0051718

Mnemonic: PLT R

Ordering Recommendation: Not recommended for the diagnosis of immune thrombocytopenic purpura (ITP). Preferred test for platelet-specific antibodies in suspected fetal or neonatal alloimmune thrombocytopenia, posttransfusion purpura, or multiplatelet transfusion refractoriness.
Methodology: Enzyme-Linked Immunosorbent Assay
Performed: Mon-Sat
Reported: 1-4 days
Specimen Required: Patient Prep: For newborns less than 30 days old, collect specimen from the mother.

Collect: Plain red, lavender (EDTA), pink (K2EDTA), or yellow (ACD Solution A).

Specimen Preparation: Separate serum or plasma from cells ASAP or within 2 hours of collection. Transfer 1 mL serum or plasma to an ARUP Standard Transport Tube. (Min: 0.5 mL)

Storage/Transport Temperature: Frozen. Also acceptable: Refrigerated if maintained at temperature for 48 hours or less.

Unacceptable Conditions: Microbially contaminated, heat-inactivated, hemolyzed, or lipemic specimens.

Stability (collection to initiation of testing): After separation from cells: Ambient: Unacceptable; Refrigerated: 48 hours; Frozen: 1 month
Reference Interval:
 
Available Separately Components Reference Interval
Yes (0051050) Platelet Antibodies, Indirect None detected.
Yes (0051051) Platelet Antibody Identification - Refer to Platelet Antibodies Indirect (0051050). Platelet antibody detection must be performed first. None detected.

Interpretive Data: See individual components.
Note: If Platelet Antibodies, Indirect result is DETECTED and antibodies directed toward IIb/IIIa glycoproteins are present, then Platelet Antibody Identification will be added. Additional charges apply.
CPT Code(s): 86022; if reflexed, add 86022
Cross References: Antiplatelet, Circulating Platelet Antibodies (Platelet Antibodies, Indirect with Reflex to Identification) , Platelet Antibodies, Qualitative (Platelet Antibodies, Indirect with Reflex to Identification)