Did you know that if you are submitting an SBIR or STTR to the NIH in response to a PA (program announcement) that you can request your grant be reviewed by a specific study section? In fact it's encouraged.
NIH SBIR and STTR grants are reviewed by Special Emphasis panels coordinated by the Center for Scientific Review. To take a look at the current SBIR Special Emphasis panels go here. Use the cover letter component to request the most appropriate study section and one or more appropriate funding Institutes or Centers.
This reduces the burden on NIH staff and affords you the best chance at determining your own fate.