US 11,703,436 B2
Biological fluid sample assessment
Efstratios Skafidas, Melbourne (AU); Hsien Ming, Melbourne (AU); You Liang, Melbourne (AU); Duc Huynh, Melbourne (AU); Thanh Nguyen, Melbourne (AU); and Michael Erlichster, Melbourne (AU)
Assigned to MX3 Diagnostics, Inc., Austin, TX (US)
Filed by MX3 Diagnostics, Inc., Austin, TX (US)
Filed on Jan. 27, 2021, as Appl. No. 17/159,770.
Claims priority of provisional application 62/967,694, filed on Jan. 30, 2020.
Prior Publication US 2021/0239586 A1, Aug. 5, 2021
Int. Cl. G01N 11/02 (2006.01); G01N 33/493 (2006.01); G01N 33/487 (2006.01); G01N 33/49 (2006.01)
CPC G01N 11/02 (2013.01) [G01N 33/48707 (2013.01); G01N 33/49 (2013.01); G01N 33/493 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A method of assessing a bodily fluid sample on a test strip, the method comprising:
applying a periodic signal with a first electrode located at a first location in a microfluidic channel of the test strip;
monitoring the applied periodic signal with a second electrode located at a second location in the microfluidic channel;
using a third electrode located at a third location in the microfluidic channel as a reference electrode, wherein each of the first electrode, the second electrode and the third electrode has a fixed function;
collecting the bodily fluid sample in the microfluidic channel while continuing to apply the periodic signal, monitor the periodic signal and use the third electrode as a reference electrode; and
determining that the bodily fluid sample is a sufficient volume for analyzing by identifying a period of stability in the monitored periodic signal, based at least in part on the applying and monitoring of the periodic signal.