Check out this article from Armbruster and Pry. They are pretty informative and I have used them to guide my analytical assessments on my devices.

Article Limit of Blank, Limit of Detection and Limit of Quantitation

For biosensors a good description of the analyte parameters could be found in:

Biosensors for real-time in vivo measurements

George S. Wilson∗, Raeann Gifford

Biosensors and Bioelectronics 20 (2005) 2388–2403

Hi Jalal,

There are several standard for LOD, sensitivity, and resolution. In my biosensor research, I use IUPAC definition of these parameters. http://goldbook.iupac.org/L03540.html

If you have series data with good linearity, that's good. Herewith my group method to calculate it:

1. Your linearity line has the slope. For instance, the trend is increased as the concentration increasing. The slope of your trendline represents your "Sensitivity". The unit can be [unit signal/unit concentration]. It means by adding certain concentration your system enhance the signal in the certain level. The higher sensitivity value, the better performance of your system.

2. Before you measure the series concentration, you need to measure the "blank or zero concentration" for your reference signal. For example, you measure 0% sample 3 times. The average signal will be your reference level. While the standard deviation (SD/noise) will be the important part to measure resolution. The resolution can be measured by:

Res = SD / Sensitivity.

The resolution unit will be [concentration unit].

In simple words, Resolution can be explained as the smallest concentration of your system that gives the signal with confidence factor 1. smaller your resolution, your system has better performance. 

3. LOD, in my group, use confidence factor 3.

So it can be calculated.

LOD = 3*SD / Sensitivity.

In simple word, LOD is the concentration you need to enhance your system resulting signal level around 3 times of your standard deviation (noise).

Good luck with your research.