Debt (Details Narrative) - USD ($) $ / shares in Units, $ in Thousands			3 Months Ended		12 Months Ended
	Nov. 22, 2024	Mar. 21, 2023	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024	Mar. 13, 2023
Short-Term Debt [Line Items]
Face value principal payable			$ 21,975		$ 21,975
Gross proceeds			$ 360
Interest rate percentage			18.00%
2024 Convertible Notes [Member]
Short-Term Debt [Line Items]
Face value principal payable	$ 21,975		$ 21,975		21,975
Gross proceeds	21,975
Net proceeds	$ 18,300
Subscription receivable					$ 400
Subscription received			$ 400
Interest rate, percentage	12.00%		12.00%		12.00%
Debt term	5 years
Conversion price	$ 1.00		$ 1.00		$ 1.00
Convertible notes description	the Company is subject to certain customary affirmative and negative covenants regarding the incurrence of indebtedness, the existence of liens, the repayment of indebtedness and the making of investments, the payment of cash in respect of dividends, distributions or redemptions, the transfer of assets, the maturity of other indebtedness, transactions with affiliates, and the consummation of fundamental transactions where the aggregate consideration payable in respect thereof, as determined on a per share of the Company’s common stock basis, has a fair market value that is less than $1.50, among other customary matters. Under the 2024 Convertible Notes, the Company is subject to a financial covenant requiring that the amount of its available cash equal or exceed $5.0 million at all times that at least 25% of the principal amount of 2024 Convertible Notes issued are outstanding.
Contractual maturity date			Nov. 22, 2029		Nov. 22, 2029
2024 Convertible Notes [Member] | Common Stock [Member]
Short-Term Debt [Line Items]
Weighted average price of common stock	$ 10.00
March 2023 Senior Convertible Note [Member]
Short-Term Debt [Line Items]
Face value principal payable		$ 11,100				$ 11,100
Interest rate, percentage		7.875%
Conversion price		$ 5.00
Contractual maturity date		Mar. 21, 2025
Payment term description		The March 2023 Senior Convertible Note installment payments were payable in shares of Lucid Diagnostics common stock at a conversion price that was the lower of the contractual conversion price and 82.5% of the two lowest VWAPs during the last 10 trading days preceding the date of conversion.