Fenugreek: botanical (seed).
Fenugreek 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 2773624).
Trigonella foenum-graecum Seed
4-hydroxyisoleucine
total or named markers, as your specification states
Botanical (seed)
Marker compounds: 4-hydroxyisoleucine
Method for the $250 identity, purity and quantity test: Chromatographic marker-compound assay, with detection selected for the compound, against a reference standard, with results in 3 to 5 business days.
The USP Herbal Medicines Compendium monograph covers identity by HPTLC fingerprint and content of 4-hydroxyisoleucine by HPLC. Full testing to the USP Herbal Medicines Compendium monograph for Trigonella foenum-graecum Seed is available and quoted.
$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.
No. The $250 test covers identity, purity and quantity by a chromatographic assay, with detection selected for the compound. Full testing to the USP Herbal Medicines Compendium monograph for Trigonella foenum-graecum Seed is available and quoted.
4-Hydroxyisoleucine is a free amino acid found in fenugreek seed and is the monograph's content marker. It has almost no UV absorbance, so the lab uses a detection method suited to the compound.
Extracts standardized to 4-hydroxyisoleucine carry much higher levels than whole seed or powder. The method is the same, with dilution adjusted to the label claim.
Fenugreek also contains steroidal saponins that yield diosgenin, which some extracts are labeled for. That is a separate marker and is quoted on request.
https://pubchem.ncbi.nlm.nih.gov/compound/2773624
Identity facts from the USP monograph header for this compound.
Start an order online, or send the compound name and the tests you need for a quote.
