Fig 5.

Short-term volume model, showing projection of examination volume 9 weeks out after Memorial Day using supply and demand. The red line is the demand-side trend, which is dependent on the current ordering trend. The shaded red area showcases the range of ordering-based examination volume corresponding to ±50% growth rate compared with the trend before Memorial Day. The dotted blue line is the supply-side trend, which is an extrapolation of the current examination volume trend without considering ordering volume. This is intended to show how many examinations can be done independent of ordering demand. Additional supply constraints may be considered to reflect other capacity limitations that may account for the discrepancy seen in late August. COVID-19 = coronavirus disease 2019.