RIPA Ristocetin Induced Platelet Aggregation (RAG)

Department: Coagulation
Test Synonym(s): LAB3076, RIPA, RAG
Test Components: Aggregation with Ristocetin, Coagulation Interpretation.
CPT Codes: 85576 per agonist
Methodology: PRP LUMI Aggregation
Reference Range: Normal response
Tube Type: Four 2.7mL Light blue top - 3.2% Sodium Citrate. One 2.7 mL lavender top tube - EDTA
Specimen: Four 2.7mL Light blue top - 3.2% Sodium Citrate. One 2.7 mL lavender top tube - EDTA
Alternate Specimen: None
Pediatric Requirements: Three 2.7mL Light blue top - 3.2% Sodium Citrate. One 2.7 mL lavender top tube - EDTA
Volume: Testing must be scheduled with Vanderbilt Esoteric Coagulation 615 875-5633
Minimum Volume: Testing must be scheduled with Vanderbilt Esoteric Coagulation 615 875-5633
Temperature: Room temperature
Stability: Room temperature: 4 hours
Reasons for Rejection: Samples sent through the pneumatic tube system or on ice
Days Performed: Monday - Friday
Times Performed: Mornings
TAT: 2-10 days for Interpretation
Special Instructions: Test must be scheduled with Vanderbilt Esoteric Coagulation Laboratory. Patient should not take over the counter medications for 10 days prior to testing. Patient must present to Vanderbilt between 8:00 and 8:30 AM on the day of testing. Patient should be fasting. Vanderbilt Esoteric Coagulation: 615 875-5633

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