Understanding LIMS ID Prefixes

Some of the more common LIMS ID prefixes are listed in the following table.

Prefix	Description
1	Address
2	Analyte (Derived Sample)
24	Standard step (not indexing — ie, not Add Labels or Pooling)
27	Container
40	File
92	ResultFile (artifact), both per-sample and step-level
120	Reagent type
122	Pooling step
151	Indexing step (ie, Add Labels)
152	Reagent label

QC steps do not have a special LIMS ID prefix.

In addition, there are also some esoteric and deprecated LIMS ID prefixes. The complete list of prefixes can be found in the classindex database table.

Translating a Step in the Web Interface to a Step URI in the API

Assuming you have a started a step, your browser address will look something like this:

https://demo.claritylims.com/clarity/work-placement/21816

The important piece is the suffix - 21816.

To convert to a step URI:

1. Note the type of step you are running. Is it a Standard step, an Indexing (Add Labels) step, or a Pooling step?
2. Add the corresponding hyphenated prefix using the previous list, to construct the step ID. For example, if it is an Indexing step, 21816 becomes 151-21816.
3. Build the step URI: https://<hostname>/api/<version>/steps/151-21816.

Translating a Step URI in the API to a Step in the Web Interface

To perform the reverse action and find a step in the web interface for a given a step URI (or a process URI):

1. Get the step ID. Using the example above, the step ID would be 151-21816.
2. Strip out the hyphenated prefix to give: '21816'.
3. Build the web address: https://<hostname>/clarity/work/21816.

Clarity LIMS will translate the word 'work' to the correct address for the screen the step is currently on. For example, if the step is completed, 'work' will become 'work-complete'.