Blood components

Concentration of single-donor platelets

DEFINITION

Platelets obtained through an aphaeresis procedure from a single donor.

HOW IT IS OBTAINED

A cell separator separates the different components in the total blood from a donor through centrifuge, collects the platelets and returns the other blood components to the donor.

COMPOSITION AND CHARACTERISTICS

Volume: between 200 and 339.
Platelet content: more than 2.5 x 1011
Leucocytes: less than 1 x 106.

ANALYSIS RESULTS

• ABO group and Rh factor.
• Irregular antibodies: negative.
• Surface antigen of the hepatitis B virus (HBs Ag): negative.
• Antibodies against the hepatitis C virus (Anti-HCV): negative.
• Antibodies against the Immunodeficiency virus (Anti-HIV 1+2): negative.
• Syphilis serology: negative.
• NAT of HCV (PCR): negative.
• NAT of HIV (PCR): negative.
• NAT of VHB (PCR): negative.
• Anti-Trypanosoma cruzi antibodies: negative (only carried out on donors with a risk of being carriers).

RECIPIENT

Collapsible plastic bags.

IDENTIFICATION

With labels containing the following data: name of the centre, type of product, ABO group and Rh (D) factor, unit number, date of extraction, expiry date, results of analysis, type of anticoagulant, preservation and administration conditions.

PRESERVATION

At 22ºC ± 2ºC, in continual motion.

EXPIRY DATE

5 days.

HANDLING

The concentrations of platelets from a single donor can be irradiated and divided into subunits.