17. INVENTORIES
 
   2021 
R’m
 
2020 
R’m 
Ethical drugs and consumable products (including surgicals consumed as well as consumables related to the production of doses relating to the diagnostic services business) 6531 873
"Drugs and consumables" represents the cost of inventories recorded as an expense in the statement of profit or loss.
The cost of inventories written off as expired stock is recognised as an expense and is included in 'drugs and consumables' in profit or loss. Inventories written off amounted to: 15 11
1 Decreased mainly due to utilisation of personal protective equipment (PPE) during the current year. The PPE balance at 30 September 2021 amounted to R235 million (2020: R317 million).