Condensed Consolidated Balance Sheets - USD ($)	Jun. 30, 2026	Dec. 31, 2025
Current assets
Cash	$ 5,942,249	$ 5,220,654
Accounts receivable, net	2,351	296,866
Inventories	210,448	149,961
Investor receivable		50,000
Prepaid expenses and other current assets	362,762	349,293
Total current assets	6,517,810	6,066,774
Property and equipment, net	28,655	37,085
Deferred offering costs	225,000	225,000
Operating right of use asset	36,734	48,774
Goodwill	9,618,142	18,549,005
Total assets	16,426,341	24,926,638
Current liabilities
Accounts payable	1,844,861	1,757,695
Accrued expenses	249,607	341,881
Notes payable	150,394
Operating lease liability, current	24,419	24,412
Contingent warrant liabilities	25,378	26,590
Derivative liabilities	649,134	6,985,347
Total current liabilities	2,943,793	9,135,925
Operating lease liability, net of current portion	12,315	24,362
Total liabilities	2,956,108	9,160,287
Commitments and Contingencies
Stockholders’ equity
Common stock, $0.00001 par value, 250,000,000 shares authorized at June 30, 2026 and December 31, 2025; 3,793,676 and 31,201 shares issued at June 30, 2026 and December 31, 2025, respectively; 3,793,673 and 31,198 shares outstanding at June 30, 2026 and December 31, 2025, respectively	38
Additional paid-in capital	152,959,715	147,836,004
Treasury stock, at cost; 3 shares of common stock at June 30, 2026 and December 31, 2025	(625,791)	(625,791)
Accumulated deficit	(138,296,736)	(131,214,558)
Accumulated other comprehensive loss	(568,717)	(231,028)
Total stockholders’ equity	13,468,509	15,764,627
Total liabilities, convertible preferred stock, and stockholders’ equity	16,426,341	24,926,638
Series C Redeemable Preferred Stock
Current liabilities
Series C Redeemable Preferred Stock, $0.00001 par value, 10,000 shares authorized, 7 shares issued and outstanding at March 31, 2026 and December 31, 2025, respectively	1,724	1,724
Series D Preferred Stock
Stockholders’ equity
Preferred Stock, value issued
Series E Preferred Stock
Stockholders’ equity
Preferred Stock, value issued

Represents the amount of contingent warrant liabilities.

No definition available.

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Namespace Prefix:	onco_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).