Item Value
Test name ARU Test Aspirin Reaction
Available Stat? No
Turn around times 4 hours
In House Availability Monday - Friday 0800 - 1600
Performed by Hematology, Parnassus
Normal range 620 - 672
Container type
1. Greiner partial fill discard
2. Greiner partial fill 3.2% Sodium citrate blue top
3. Lavender EDTA tube

Amount to Collect 8 mL
Collection Instructions Contact Hematology at x3-1747 for collection kits. DO NOT collect any specimens before 0800 or after 1600.

1. Whole blood samples must be collected in or immediately transferred to Greiner 2.0 mL partial fill blue top tubes containing 3.2% Sodium Citrate. The tube must be filled to its intended whole blood capacity (indicated by small black line).
2. Whole blood may be collected from venous sites using a 21 gauge or larger needle in an appropriate blood collection tube.
3. Blood samples should be obtained from an extremity free of peripheral venous infusions.
4. Collect a discard tube first (approximately 2 mL), Greiner partial fill blue tops 2nd, and a lavender for CBC last.
5. Gently invert the sample tube at least 5 times to ensure complete mixing of the contents.
6. Blood must set a minimum of 10 minutes after collection before testing but no longer than 4 hours.


Samples cannot be pneumatic tubed.

An ARU will be ordered in computer. If no CBC or CBCD is requested, Central Processing will order a hematocrit (HCT) and platelet count (PLT).
Sample type Citrated and EDTA anticoagulated whole blood

If you have additional questions regarding this test, please call: 415-353-1667