An amino acid that rises when B-vitamin metabolism is off; elevated levels are studied as a cardiovascular risk marker.
$11.90
Every order site, cheapest first
All-in = the test price plus that site's one-time blood-draw or order fee. 2 of these sites have changed this price since our June baseline. Always confirm on the vendor's own site before ordering.
| Order site | Performing lab | Test | Draw fee | All-in | Status |
|---|---|---|---|---|---|
| Fitomics · Insider · Quest ↗ | Quest | $11.90 | - | $11.90 | verified |
| Dirt Cheap Labs · Quest ↗ | Quest | $9.65 | $10.00 | $19.65 | verified |
| GoodLabs ↗ | Quest / LabCorp / BioReference | $13.00 | $12.00 | $25.00 | verified |
| Dirt Cheap Labs · LabCorp ↗ | LabCorp | $15.46 | $10.00 | $25.46 | verified |
| Fitomics · Insider · BioReference ↗ | BioReference | $27.90 | - | $27.90 | verified |
| Fitomics · Insider · LabCorp ↗ | LabCorp | $29.90 | - | $29.90 | verified |
| Marek · Quest ↗ | Quest | $20.45 | $10.00 | $30.45 | verified |
| Fitomics · Outsider · Quest ↗ | Quest | $12.90 | $20.00 | $32.90 | verified |
| DrSays · Subscription · LabCorp ↗ | LabCorp | $33.99 | - | $33.99 | verified |
| M&M Labs and Diagnostics · LabCorp ↗ | LabCorp | $34.00 | $8.00 | $42.00 | verified |
| DrSays · No Sub · LabCorp ↗ | LabCorp | $33.99 | $9.99 | $43.98 | verified |
| Fitomics · Outsider · BioReference ↗ | BioReference | $28.90 | $20.00 | $48.90 | verified |
| DiscountedLabs · Quest ↗ | Quest | $41.00 | $8.00 | $49.00 | verified |
| Ulta Lab Tests · Quest ↗ | Quest | $36.95 | $12.95 | $49.90 | verified |
| JasonHealth · Quest ↗ | Quest | $45.00 | $18.00 | $63.00 | verified |
| WalkInLab ↗ | LabCorp / Quest | $68.00 | - | $68.00 | verified |
| Fitomics · Outsider · LabCorp ↗ | LabCorp | $49.90 | $20.00 | $69.90 | verified |
| OwnYourLabs · LabCorp ↗ | LabCorp | $68.00 | $6.00 | $74.00 | verified |
| PrivateMDLabs ↗ | LabCorp / Quest | $80.00 | - | $80.00 | verified |
| Grass Roots Labs · Quest ↗ | Quest | $85.56 | $28.00 | $113.56 | verified |
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Prices are collected periodically and can change or lapse. This is a research and education resource, not medical advice. Pricing framework and source data compiled by PedroDaGr8, reproduced with permission.