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The phrase "below the detection threshold" is correct and usable in written English.
It is used to refer to a level or measure that is lower than the minimum amount that can be measured or observed. For example, "The air pollution level was below the detection threshold."
Exact(60)
When the number of particle is 100, the existence probability is always below the detection threshold, so the target cannot be detected.
Presumably the low-levels of GFAP and βIII tubulin expression that were detected in eNPC by immunocytochemistry were below the detection threshold for Western blotting.
If the BER at RSU is large enough, the presence of PU is detected even if the received energy of PU at TSU is below the detection threshold.
The main idea in perceptual coding is to hide the quantization error below the detection threshold.
The figure shows that the detector value, g t, remains most of the time below the detection threshold.
Some of these were discarded merely because in the initial months, the deposition on some indoor samples was below the detection threshold.
Three individuals out of 31 survivors had cleared infection below the detection threshold.
1 Week after the last fluoxetine injection fluoxetine levels were below the detection threshold.
Rep2 replicated this ITR very inefficiently at a level below the detection threshold of densitometric analysis (Fig. 4D, Southern).
Endotoxin levels in the profilin preparation were below the detection threshold (<0.1 ng/µg) as assessed by the limulus assay.
At baseline, all mice in each treatment arm had anti-dsDNA antibody titers below the detection threshold.
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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com