Drug-Dependent Platelet Antibody
Label Mnemonic: DDPAB
Epic Lab Code: LAB8251
Downtime Form: A-1a Miscellaneous Request
Commercial Mail-out Laboratory
5231 RCP
356-8593
Specimen(s):
Serum
Specimen Instructions:
Sample must be received within 7 days of draw date. Older samples are acceptable if they have been frozen.
Collection Medium:
and
Red top tube 5 mL (Clot Activator) Red top tube 5 mL (Clot Activator)
Minimum:
Adult Volume: Collect TWO full 5 mL red top tubes.
Pediatric Volume: Collect ONE full red top tube
Turn Around Time:
3-4 days upon receipt at reference laboratory
Reference Range:
No drug-dependent platelet antibodies detected. (Fluorescence Ratio < 2.0).
Comments:
Evaluation of patients who develop thrombocytopenia after exposure to certain drugs is an important component of clinical evaluation.

Please print, complete, and submit the Platelet & Neutrophil Immunology Test Requisition from the Blood Center of Wisconsin with the appropriate signature, the correct sample type and the A-1a Miscellaneous Request.
Test Limitations:
Only serum or citrated plasma is accepted for testing. Positive test results are not absolutely diagnostic of drug-induced thrombocytopenia and must be used in combination with clinical information to make a diagnosis. Negative results do not completely rule out a diagnosis of drug-induced immune thrombocytopenia.
Methodology:
Immunofluorescence by Flow Cytometry
CPT Code:
86022, each additional drug: 86022