Collocations for deficiency - noun

major, serious, severe
slight
dietary, nutritional
immune
enzyme, hormone, mineral, nutrient, vitamin
calcium, iron, etc.

have, suffer from
He's suffering from a severe vitamin deficiency.

correct, make good, make up, overcome, remedy
I've been prescribed iron to make up the deficiency.
An engineer could remedy the deficiencies in the design.

detect, identify
indicate
These symptoms indicate a protein deficiency.

cause, induce
Lack of sunlight can cause deficiency in vitamin D.

deficiency in
serious deficiencies in the health service