To create any new question, you need the 'Create question' permission
To create any new question, you need the 'Create question' permission
A laboratory test question requires the data entry user to enter a real number into a text box. See image
They differ from real number questions in that they are validated against the normal range information in a laboratory definition and are assigned CTC grades from the definition of a CTC Scheme. Laboratories and CTC schemes are maintained in the LM module. Help on how normal ranges work...
Select Insert > Question. Alternative method
Enter a code for the new question. Help on creating codes...
Enter a name for the new question. Help on creating names...
Select Laboratory Test from the Question Type drop down list.
The unit of measurement is automatically filled in.
Select a format from the Format drop down list. This determines how many digits and decimal places can be entered and how the number should be displayed. You must include at least one digit before and after the decimal point. Help on number formats...
Select the clinical test group and clinical test to which the question refers from the drop down lists.
Click OK to create the question.
Help on other fields in question definition window...
It is not possible to define validation or set a derivation for a laboratory test question.
If your laboratory definitions contain normal ranges that are date dependent, you should ensure that there is a date value associated with the laboratory test question. To do this:
Create a date/time question on the same eForm as the lab test questions. See image
Then specify this question in the Laboratory Test Date field in the eForm Definition Window. See image
If you are using the partial date handling feature, note that laboratory test dates may not be partial dates.
If your laboratory definitions contain normal ranges that are gender or age dependent, ensure that you have specified Arezzo expressions for Gender and Date of Birth in the Subject Details tab of the Study Details window. The questions from which the gender and date of birth are derived should not be on the same eForm as the laboratory test questions; they should be on an eForm which is completed before the laboratory test questions are answered.
If you wish to display the CTC grade of a laboratory test question, you can create a new integer question with a derivation of question:ctcgrade where question is the name of the laboratory test question. The result of the expression will be displayed as an integer of 1 to 4.
If you wish to display the normal range status of a laboratory test question, you can create a new text question with a derivation of question:nrstatus where question is the name of the laboratory test question. The result of the expression will displayed as a single text character; 'N', 'H' or 'L'.
For example, if a laboratory test question is called 'platelets', the expression platelets:ctcgrade will display the CTC grade of the result, and the expression dateof(platelets) will display the normal range status.
