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. 2021 Jan 19;11(1):26. doi: 10.3390/bios11010026

Table 1.

Current commercially available breath acetone sensing devices.

Brand Technology FDA Status Strengths Limits
METRON [71] SNP c, ammonium sulfate powder N/A b Disposable Off Market
INVOY [72,75] Liquid Cartridges with Metal Oxide d Registered Class 1 Available through a nutrition program Disposable cartridges
Ketoscan [36,73] Photoionization Detector Registered Class 1 Undergoing trials Limited data
House of Keto [35] Metal Oxide Detector N/A b Cheap cost Generic build, Limited data
Ketonix [76] N/A a Registered Class 1 Cheap cost Limited data
Qetoe [34] Metal Oxide Detector N/A b Cheap cost Generic build, Limited data
Lencool [33] Metal Oxide Detector N/A b Cheap cost Generic build, Limited data
Lexico health [32] Metal Oxide Detector N/A b Cheap cost Generic build, Limited data
KetoPRX [77] N/A a N/A b Cheap cost Generic build, Limited data
Keyto [78] N/A a N/A b Easy use Limited data
LEVL [79] N/A a Registered Class 1 Clinician coaching included Expensive, limited data
Biosense [31,70] Metal Oxide Detector Registered Class 1 Data available expensive

a Technology in use was not publicly available. b The device listed is not registered with the FDA or the status could not be determined. c Sodium Nitroprusside (SNP). d Specific details regarding composition of liquid and the metal oxide was not listed.