Blood components

Concentrates of filtered erythocytes

DEFINITION AND HOW THEY ARE OBTAINED

Erythrocyte concentrates are filtered over a leukocyte-removing filter in order to eliminate most of the leukocyte content.

COMPOSITION AND CHARACTERISTICS

Volume: the filtering process causes a loss of 47.4 ml.
Erythrocytes: 84% of the initial erythrocyte content is recovered.
Leukocytes: the final leukocyte content varies between 0.5 x 10⁵ and 4.4 x 10⁵.

ANALYSIS RESULTS

• ABO group and Rh factor.
• Irregular antibodies: negative for clinically significant antibodies in the conditions for use of this product.
• Hepatitis B surface antigen (HBsAg): negative.
• Hepatitis C virus antibodies (Anti-HCV): negative.
• Human immunodeficiency virus antibodies (Anti-HIV 1/2): negative.
• Lues serology: negative
• HCV RNA (PCR): negative.

RECIPIENT

Collapsible plastic bags.

IDENTIFICATION

By labels stating: name of centre, type of product, ABO group and Rh (D) factor, unit number, date of extraction, expiry date, results of completed analysis, type of anticoagulant, and instructions for storage and administration.

STORAGE

Between 2º and 6ºC.

SHELF LIFE

The process of filtering erythrocyte concentrates, if performed in a closed circuit, does not affect the shelf life. If the process is not performed in a closed circuit, the expiration date is 24 hours after filtering.

TREATMENT

Erythrocyte concentrates may be fractionated into subunits.