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Post-Transfusion Purpura

Item Value
Approval req'd? REQUIRES INSURANCE INFORMATION, AUTHORIZATION FROM HEALTH CARE PROVIDER FOR TEST AND PRIOR APPROVAL BEFORE COLLECTION OF SAMPLES.
.
Contact Blood Bank at 3-1313 to coordinate testing.

Blood bank will complete the Platelet & Neutrophil Immunology Lab Requisition and order the appropriate test code.

he test will be entered as a Miscellaneous Outside Laboratory Test (MOLT).
Available Stat? No
Test code MOLT (Order in Apex as 'Miscellaneous Outside Lab Test' using the complete test name above)
Performed by Blood Center of Wisconsin
Sendout? Yes
Method Flow cytometry, ELISA and PCR
Collection Instructions See Information under Approval Req'd before submitting samples

Specimens only accepted 8am-5pm Monday-Thursday, and up to noon on Fridays.

Note: Samples must be received at the Blood Center of Wisconsin within 4 days of draw.
Container type ACD Yellow top (x3) and Red top (x3)
Amount to Collect 30 mL in ACD (yellow top) AND 20 mL in Red tops
Sample type ACD whole blood AND serum
Preferred volume 30 mL ACD blood, AND 10 mL serum
UCSF Rejection Criteria Samples collected outside of acceptable time frames.
Processing notes Forward whole blood Yellow (ACD) and Red top tubes to China Basin for Federal Express pickup at 4:00 pm.Monday-Friday.

Mark Federal Express shipping form for next day delivery.

Samples must be received within 4 days of draw date at the Blood Center of Wisconsin. China Basin will ship specimens on ice pack, and protect whole blood from freezing by wrapping in paper towel. Place requisition into plastic bags and seal. Use an insulated container, place in a sturdy cardboard box and mark box REFRIGERATE UPON ARRIVAL.

PLEASE CALL THE LABORATORY (800 -245-3117, ext 6255) FOR ADVICE IF YOU WILL SHIP SAMPLES NEAR A MAJOR HOLIDAY.

Shipping Address: Client Services/PNIL, Blood Center of Wisconsin, 638 North 18th St., Wilwaukee, WI 53232-2121

Phone: 800 245-3117, ext 6396
Ref Lab Rejection Criteria Samples > 4 days old when received. Whole blood sample received frozen.
Normal range Negative
Synonyms P1A1; P1A2; Bak; Pen; PTP
Stability Samples must be received within 4 days of draw date at the Blood Center of Wisconsin.
Turn around times 1-2 weeks
Additional information Post-transfusion purpura may arise from the cross-reaction of antibodies to transfused platelets with the patient's own platelets in the 2% of the general population whose platelets lack the common PlA1 antigen or other less common antigens such as PlA2, Bak and Pen or, more rarely, following the administration of blood products collected from previously sensitized donors. It is most common in multiparous women and in previously transfused patients.
CPT coding 83891-90,83896-90 x18,83900-90,83901-90 x5, 83912-90,86022-90 x11
Last Updated 2/20/2014 3:15:22 PM
Entry Number 763
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