Albumin Gen.2

Catalog Number: 03183688122

SYSTEM INFORMATION

For cobas c 311/501 analyzers:

STORAGE AND STABILITY

ALB2
Shelf life at 15-25 °C: See expiration date on cobas c pack label.
On-board in use and refrigerated on the analyzer: 12 weeks
Diluent NaCl 9 %
Shelf life at 2-8 °C: See expiration date on cobas c pack label.
On-board in use and refrigerated on the analyzer: 12 weeks

Specimen collection and preparation

APPLICATION FOR SERUM AND PLASMA

cobas c 311 test definition
Assay type 2-Point End
Reaction time / Assay points 10 / 6-9
Wavelength (sub/main) 505/570 nm
Reaction direction Increase
Units g/L (µmol/L, g/dL)
Reagent pipetting Diluent (H2O)
R1 100 µL
R2 20 µL 30 µL
Sample volumes Sample Sample dilution
Sample Diluent (NaCl)
Normal 2 µL
Decreased 2 µL 35 µL 70 µL
Increased 2 µL

 

CALIBRATION

Traceability: This method has been standardized against the reference preparation of the IRMM (Institute for Reference Materials and Measurements) BCR470/CRM470 (RPPHS - Reference Preparation for Proteins in Human Serum).​5

Calibrators S1: H2OS2: C.f.a.s.
Calibration mode Linear
Calibration frequency 2-point calibration• after 4 weeks on board• after reagent lot change• as required following quality control procedures

CALIBRATION MODE

CALIBRATION FREQUENCY

LIMITS AND RANGES

Measuring range

MEASURING RANGE

2-60 g/L (30.4-912 µmol/L, 0.2-6 g/dL)

LOWER LIMITS OF MEASUREMENT

Lower detection limit of the test

SPECIFIC PERFORMANCE DATA

Representative performance data on the analyzers are given below. Results obtained in individual laboratories may differ.

PRECISION

Precision was determined using human samples and controls in an internal protocol with repeatability (n = 21) and intermediate precision (3 aliquots per run, 1 run per day, 21 days).The following results were obtained:

PRECISION WAS DETERMINED USING HUMAN SAMPLES AND CONTROLS IN AN INTERNAL PROTOCOL WITH REPEATABILITY (N = 21) AND INTERMEDIATE PRECISION (3 ALIQUOTS PER RUN, 1 RUN PER DAY, 21 DAYS).THE FOLLOWING RESULTS WERE OBTAINED:

INTERMEDIATE PRECISION

METHOD COMPARISON

Albumin values for human serum and plasma samples obtained on a Roche/Hitachi cobas c 501 analyzer (y) were compared with those determined using the corresponding reagent on a Roche/Hitachi 917 analyzer (x).

BABLOK W, PASSING H, BENDER R, ET AL. A GENERAL REGRESSION PROCEDURE FOR METHOD TRANSFORMATION. APPLICATION OF LINEAR REGRESSION PROCEDURES FOR METHOD COMPARISON STUDIES IN CLINICAL CHEMISTRY, PART III. J CLIN CHEM CLIN BIOCHEM 1988 NOV;26(11):783-790.