Abbreviations: Degrees and Certifications

In general, use periods in academic degrees:
Ph.D.
M.D.
R.N.
B.A.
The exception is MBA. Most reference books, including the dictionary, leave the periods out of that one, so we will, too.

In BHG magazine, use periods in professional certifications:
C.D.E.
C.K.D.
R.D.

In SIM content, on the other hand, do not use periods in professional certifications:
CDE
CKD
RD
Sometimes this will result in mixed formats in a single byline:
Jane Johnson, Ph.D., CDE


 

Abbreviations
Capitalization
Company Names
Dates and Times
Degrees and Certifications
Periods
Plurals
Spaces

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