Guarana: botanical (caffeine-containing seed).
Guarana 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 2519).
Paullinia cupana Seed
caffeine, theobromine, theophylline
total or named markers, as your specification states
Botanical (caffeine-containing seed)
Marker compounds: caffeine (CAS 58-08-2), theobromine (CAS 83-67-0), theophylline (CAS 58-55-9)
Method for the $250 identity, purity and quantity test: HPLC-UV marker-compound assay (caffeine, theobromine and theophylline), LC-MS identity, against a reference standard, with results in 3 to 5 business days.
The USP Herbal Medicines Compendium monograph (proposed for development) covers identity by HPTLC fingerprint and content of methylxanthines such as caffeine and theobromine by HPLC.
$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 HPLC-UV measurement of caffeine, theobromine and theophylline, with LC-MS identity. The USP Herbal Medicines Compendium monograph for Paullinia cupana Seed is still in development; testing against it is available and quoted.
Caffeine content alone cannot tell plant caffeine from added caffeine. A caffeine level well above what guarana seed normally contains, or a missing theobromine and catechin profile, can point to spiking.
Guarana contains caffeine with smaller amounts of theobromine and theophylline. The ratio of these methylxanthines helps confirm that the material is guarana and not another caffeine source.
Usually as ground seed powder, extract powder, capsules or as an ingredient in drinks. Results are reported per gram or per serving of the form received.
https://pubchem.ncbi.nlm.nih.gov/compound/2519
Identity facts from the USP monograph header for this compound.
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