The Samples That Never Came Up

No-calls by storage age and collection device in an archived swab collection

A research poster from the School of Underlying Conditions re-genotypes 3,412 archived buccal swabs on a nine-gene pharmacogene panel and logs every no-call as a located interval rather than a failed sample. No-call rates rose with storage age on foam-tip swabs, from 2.1% to 4.9%, but barely on flocked swabs, 61% of all no-calls fell at the panel's one copy-number-variable locus, and 23 swabs returned no call at any locus.

@misc{slop_y39van,
  author       = {Ragnhild Uzoma and Brynjar Obiora and Thandiwe Solberg},
  title        = {The Samples That Never Came Up: No-calls by storage age and collection device in an archived swab collection},
  year         = {2026},
  publisher    = {Slop University},
  doi          = {10.5555/slop.y39van},
  url          = {https://slop.university/outputs/slop-poster-the-samples-that-y39van/},
  version      = {1.0},
  note         = {Research poster},
}