# State contract: Tonbo Biosciences (VA)

> State-procurement record: https://www.xh1b.org/contract/ab4cd34a-c4d0-46d8-8c21-e94dea15f75d · [vendor profile](https://www.xh1b.org/org/tonbo-biosciences-3634249a17)

Tonbo Biosciences holds a VA state government contract with Virginia Commonwealth University in San Diego, CA. The recorded award value is $101.00. It started on Nov 30, 2020.

| Metric | Value |
|---|---|
| Vendor (as filed) | TONBO BIOSCIENCES |
| Matched employer record | [TONBO BIOSCIENCES](https://www.xh1b.org/org/tonbo-biosciences-3634249a17) |
| Awarding agency | Virginia Commonwealth University |
| State | [VA](https://www.xh1b.org/state-contracts/VA) |
| Award amount | $101.00 |
| Start date | 2020-11-30 |
| NIGP | 96100 |
| Contract number | 2021_464476 |
| Description (as filed) | 60-0451-U100-PE-Cyanine7 Anti-Mouse CD45 (30-F11) |
| Place of performance | [San Diego, CA, 92121](https://www.google.com/maps/search/?api=1&query=San%20Diego%2C%20CA%2C%2092121) |
| County (FIPS) | 06073 |
| Source URL | https://data.virginia.gov/dataset/eva-procurement-data-2024 |
| Ingested | 2026-08-23 |

The stored run 70c24659-f67e-4603-aff1-05541be681a9 belongs to state_contracts_rebuild, not this jurisdiction. Source custody is unresolved.

## Other government contracts with this vendor (113 on record)

Page 1 of 15. 113 related source records.

| Contract | Ledger | Date | Recorded value |
| --- | --- | --- | --- |
| [University of North Dakota](https://www.xh1b.org/contract/6caf14c3-44de-4afd-9127-85327726d2eb) | State · ND | 2021-09-30 | $238.00 (Award amount) |
| [University of North Dakota](https://www.xh1b.org/contract/c3dfac35-7ab9-4ac9-a5ef-e9c6408aff62) | State · ND | 2021-08-31 | $150.00 (Award amount) |
| [University of North Dakota](https://www.xh1b.org/contract/b601de9f-7c2a-4a35-ab15-41ffe7612e2a) | State · ND | 2021-07-31 | $211.00 (Award amount) |
| [Virginia Commonwealth University](https://www.xh1b.org/contract/7c064f8b-1b50-4553-90fd-d4849cc11ae0) | State · VA | 2021-02-16 | $35.00 (Award amount) |
| [Virginia Commonwealth University](https://www.xh1b.org/contract/e6e33d80-6e8e-40af-a2a5-2574050bd2cd) | State · VA | 2021-02-16 | $406.00 (Award amount) |
| [Virginia Commonwealth University](https://www.xh1b.org/contract/eb0be5cf-79b6-4572-b695-bd9662a5ffdd) | State · VA | 2021-02-16 | $115.00 (Award amount) |
| [Virginia Commonwealth University](https://www.xh1b.org/contract/254ce86b-e7b7-4f8a-8c65-709bf592a4e4) | State · VA | 2021-01-06 | $167.00 (Award amount) |
| [Virginia Commonwealth University](https://www.xh1b.org/contract/64ad9479-cc01-43b0-af37-5ba204e8aaf0) | State · VA | 2021-01-06 | $35.00 (Award amount) |

## More

- Full page (charts, tables, interactive): https://www.xh1b.org/contract/ab4cd34a-c4d0-46d8-8c21-e94dea15f75d


## References

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1. XH1B method or registry · XH1B. [State contracts and Connecticut payments: source registry; Reading Public Records and Derived Indicators](https://www.xh1b.org/data-sources). Source registry entry: state_contracts; Reading records: units, source coverage, wage gaps, entity links, and inference limits. XH1B dataset description: State government award and vendor records. Connecticut Open Expenditures records payments, including grants. Payment totals stay separate from contract awards. Record identity fields vary by source; amounts and descriptions do not set identity.; These are the site's review methods, not validated predictions of wrongdoing. Inspect underlying records and alternative explanations.

<a id="reference-data-dataset-state_contracts-dataset-federal_contracts-indicators-method-dataset-federal_contracts"></a>

2. Dataset documentation · USAspending / U.S. Treasury. [Federal Spending Guide: contract transactions](https://www.usaspending.gov/data/Federal-Spending-Guide.pdf#page=9). Pages 3, 5, 9 and 17: transactions, amount fields and recipient identifiers. Contract downloads contain prime award transactions. XH1B’s use of recipient identifiers for employer links is its own processing step. Checked 2026-10-18.