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Functional Areas

Supply Planning of Health Products

Supply planning is a critical process to avoid stock-outs and treatment disruption, overstocks and wastage. Accurate quantification, monitoring of consumption levels, establishment of minimum stock levels (the point at which re-ordering must happen) will minimize the risk of stock-outs and ensure continuity of treatment and value for money.

Once the quantification of needs is completed, it is necessary to determine when and in what quantities orders should be placed.

The quantification outputs should be broken down into monthly needs. If the coverage is expected to be equal throughout the year, the calculations can be made for one year then divided by 12 months. If, however, it is anticipated that coverage will increase as the programme scales up, then a new calculation will have to be made for each period in which coverage is expected to increase. Similarly, if, as is sometimes the case for malaria, there is a higher prevalence during certain months of the year, the calculations must reflect this.

It is also important that orders include some buffer stock in case of any unexpected delays in the supply chain, such as delayed arrival of subsequent orders, unexpected changes in consumption levels, or programmatic changes. Buffer stock should be expressed with time periods and calculated based on both the agility of the national supply chain and any programmatic constraints.

The most important factor in this determining when orders should be placed is the lead time for a product or product category. The lead time is the length of time between confirming an order with a manufacturer/supplier and actually receiving the products at the service delivery point.

Lead time and buffer stock levels provide the basis for calculating the minimum and maximum stock levels; once stocks reach the minimum level, order should be initiated at the various levels of the supply chain.


Practice Pointer
The procurement officer should always start with the date when the end user needs the product and work backwards to determine when the procurement process should commence.

The following factors must be taken into account during planning: