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Net Loss Per Share (Tables) | 9 Months Ended
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Sep. 30, 2021
Earnings Per Share [Abstract] |
Schedule of Basic and Fully Diluted Net Loss Per Share | The “Net loss per share basic and diluted” for the respective periods indicated - is as follows: Schedule of Basic and Fully Diluted Net Loss Per Share
|  | 2021 |  |  | 2020 |  |  | 2021 |  |  | 2020 |
|  | Three Months Ended |  |  | Nine Months Ended |
|  | September 30, |  |  | September 30, |
|  | 2021 |  |  | 2020 |  |  | 2021 |  |  | 2020 |
Numerator |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net loss |  | $ | (6,956,619 | ) |  | $ | (2,021,677 | ) |  | $ | (16,772,393 | ) |  | $ | (5,548,873 | )
Denominator |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average common shares outstanding, basic and diluted |  |  | 14,114,707 |  |  |  | 14,114,707 |  |  |  | 14,114,707 |  |  |  | 14,114,347 |
Net Loss per share |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net loss per share - basic and diluted |  | $ | (0.49 | ) |  | $ | (0.14 | ) |  | $ | (1.19 | ) |  | $ | (0.39 | )
Schedule of Anti-dilutive Securities Excluded from Computation of Diluted Earnings Per Share | Schedule of Anti-dilutive Securities Excluded from Computation of Diluted Earnings Per Share
|  | September 30, |
|  | 2021 |  |  | 2020 |
Lucid Diagnostics Inc. 2018 Equity Plan: |  |  |  |  |  |  |  |
- stock options |  |  | 975,942 |  |  |  | 975,942 |
- unvested restricted stock awards |  |  | 1,813,135 |  |  |  | — |
Stock options not granted under a plan |  |  | 423,300 |  |  |  | 423,300 |
Total |  |  | 3,212,377 |  |  |  | 1,399,242 |

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- Definition Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 + Details
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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 + Details
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