Ginkgo biloba: Ginkgo biloba leaf or extract.
Ginkgo biloba testing at Vanguard Laboratory: identity, purity and quantity $250 per sample, with results in 3 to 5 business days.
Marker compound: 2D structure drawn from the PubChem record (CID 9909368).
Ginkgo biloba leaf or extract
flavonol glycosides and terpene lactones (ginkgolides A, B and C, and bilobalide)
total or named markers, as your specification states
botanical ingredient
Marker compounds: flavonol glycosides and terpene lactones (ginkgolides A, B and C, and bilobalide).
Ginkgo biloba is extracted and its marker compounds measured by a chromatographic assay, with detection selected for the compound, against marker reference standards. Marker compounds are measured against reference standards, $250 per sample with results in 3 to 5 business days. Tell us the basis your specification uses: a total, named markers or a single compound.
$250
Chromatographic purity and mg per unit by the method matched to the compound, identity against a reference standard. 1 unit.
| Add-on test | Price |
|---|---|
| Identity and impurities | |
| FTIR identity | $90 |
| CHNS elemental analysis (carbon, hydrogen, nitrogen, sulfur) | $125 |
| Chiral purity (where a chiral method exists; new methods quoted) | $250 |
| Water, solvents and salt form | |
| Water content by Karl Fischer | $60 |
| Residual solvents | $150 |
| Counterions: chloride, acetate and TFA | $70 |
| Assay | |
| Assay, % w/w (with raw powder purity; $250 together) | +$50 |
| Metals and conformity | |
| Heavy metals: arsenic, cadmium, chromium, mercury and lead | $150 |
| Conformity: purity and quantity on more units from the same lot | $100 per extra unit |
10% off for 10 or more samples.
Need something else? Other tests are available on request.
Purity and quantity is $250 per sample (1 unit) and raw powder purity is $200 for 50 mg, with results in 3 to 5 business days. Send the material sealed and labeled, with the label claim and the form it contains.
Flavonol glycosides and terpene lactones, each by HPLC against reference standards, plus ginkgolic acids where your specification limits them.
Yes. Capsules, powders, gummies and liquids are measured with sample preparation matched to the product, and reported in mg per serving or % w/w against the label.
Send the product name, the form of the ingredient and the label claim for a quote, or submit a sample with the sample form.
