PLATELET AGGREGATION

Message
Requires both plasma and blood. 1. Submit specimens to the testing department as whole blood in their original collection container s. Do no spin, Do not aliquot. 2. Specimens should be drawn with a minimum of trauma or stasis at the venipuncture site and anticoagulated with 3. 2% sodium citrate, in the ratio of 1 part anticoagulant to 9 parts of blood. 3. Plastic or non-contact surfaced (siliconized) material should be used throughout in order to minimize activation of the platelets during sample preparation. Please collect 1 EDTA - Lavender top tube in addition to the 10 Light Blue - Citrate tubes, this is required for testing. Collect a full tube to the fill line, following standard venipuncture techniques. Do not over or under fill tubes as the ratio of blood to anticoagulant (9: 1) is necessary for accurate results. Gently Invert the tube three or four times immediately after venipuncture to ensure proper mixing of blood and anticoagulant. It is extremely important that care be taken in the collection, handling, and preparation of the patient' s blood specimen. Specimens should be drawn with minimal trauma or stasis at the venipuncture site. Cord blood is not acceptable.


Test Code
LAB2386 PLAGO


Alias/See Also
PLAGO


CPT Codes
85576

Includes
Testing must be scheduled. Please call Inova Laboratories at 703-645-6175, option 2 to schedule an appointment. Patient Preparation: Patient should be resting, fasting and non-smoking. Avoid taking an prescription or over the counter medications known to affect platelet function for 10 days to 2 weeks prior to the test (unless otherwise instructed by your provider; i.e. the aim of testing is to demonstrate drug-induced inhibition).


Report Available
Routine 24-Hours|Timed 24-Hours


Clinical Significance
1230140078



Last Updated: May 18, 2026


The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.