Shandong Biomedia Laboratories Co.,Ltd.
Home > Diagnostic Reagents

Albumin (ALB) Test Kit (Bromocresol green method)

The albumin (ALB) test kit is intended for the accurate and direct quantitative measurement of ALB in human plasma.
Brochure Download

Test principle

In specific buffer solution, positively charged ALB molecules react with negatively charged BCG molecules, forming the blue-green complex which shows absorption at the wavelength of 600 nm. The absorbance of this complex is proportional to the concentration of ALB.

ALB concentration can be calculated by comparing with the standard solution prepared in the same method mentioned above.

Product Features

1.    Linear range of ALB level: [2, 60] g/L

Linear correlation coefficient ∣r∣≥0.990

Linear deviation ≤ ± 10.00%

2.    Absorbance of blank ≤ 0.40  

3.    Sensitivity

The change in absorbance (ΔmA) ≥ 1.00 while testing the specific ALB sample of concentration of 35.3 g/L.

4.    Accuracy

Relative deviation is within ±10%.

5.    Precision

Intra CV% ≤ 5.0%; inter CV% ≤ 5.0%.


Technical Parameters



Optical path length (OPL)

1.0 cm

Main wavelength

600 nm

Secondary wavelength

700 nm (Optional)


End-point method

(single reagent)

Reaction direction



5 μL


300 μL

Reaction time

60 s

Reference range of ALB level: 35 – 50 g/L.

Packing Specifications

R1: 1×40 ml, R2: 2×20 ml

R1: 4×40 ml, R2: 8×20 ml

R1: 1×100 ml, R2: 2×50 ml

R1: 2×100 ml, R2: 4×50 ml

R1: 3×100 ml, R2: 6×50 ml

Storage and stability

Unopened: Store test kits at 10 - 30℃ protected from light. Stable to expiration date printed on individual vials (for 15 months).

Opened: Store test kits at 10 - 30℃ protected from light. Stable for 1 month if kept capped from original container and free from contamination.

Do not freeze the test kit.

← Go back to the last page
Shandong Biomedia Laboratories Co., Ltd. copyright 2015 Lu ICP No. 12031366 -1
Address: Block B south building,6th floor,Huayang Road #65,Lixia District,Jinan City,Shandong Province,PR. China.Tel:86-531-88796262 Fax:86-531-88796464