Evidence map›Paper›PMID 33526142›Full record

ArticleJournal of cannabis research2020

Regulatory sampling of industrial hemp plant samples (Cannabis sativa L.) using UPLC-MS/MS method for detection and quantification of twelve cannabinoids.

Erin C Berthold, Rui Yang, Abhisheak Sharma, Shyam H Kamble, Siva R Kanumuri, Tamara I King, Raluca Popa, Joshua H Freeman, Zachary T Brym, Bonnie A Avery and 1 more

Open access · goldAbstract read
In one paragraph

Article in Journal of cannabis research, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
1.4field-weighted citation impact, top 19% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

10 citing papers in PubMed, 21 citations in OpenAlex.

  1. Nutritive Value and Cannabinoid Potency of Diverse Hemp (Journal of agricultural and food chemistry · 2026
    Article
  2. Derivation of a health-based guidance value for ΔEFSA journal. European Food Safety Authority · 2025
    Article
  3. An in vitro evaluation of common botanical extracts on carboxylesterase 1 catalytic activity.Drug metabolism and disposition: the biological fate of chemicals · 2025
    Article
  4. Review
  5. CBD oil by-product (Heliyon · 2024
    Article
  6. Article
  7. Commercial Delta-8 THC Products: an Analysis of Content and Labeling.Journal of medical toxicology : official journal of the American College of Medical Toxicology · 2024
    Article
  8. Article
  9. Article
  10. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

11 authors at 1 institution in 1 country.

Erin C BertholdDepartment of Pharmaceutics, College of Pharmacy, University of Florida, Gainesville, FL, USA.
Rui YangNorth Florida Research and Education Center, University of Florida, Quincy, FL, USA.
Abhisheak SharmaDepartment of Pharmaceutics, College of Pharmacy, University of Florida, Gainesville, FL, USA.
Shyam H KambleDepartment of Pharmaceutics, College of Pharmacy, University of Florida, Gainesville, FL, USA.
Siva R KanumuriDepartment of Pharmaceutics, College of Pharmacy, University of Florida, Gainesville, FL, USA.
Tamara I KingDepartment of Pharmaceutics, College of Pharmacy, University of Florida, Gainesville, FL, USA.
Raluca PopaDepartment of Pharmaceutics, College of Pharmacy, University of Florida, Gainesville, FL, USA.
Joshua H FreemanNorth Florida Research and Education Center, University of Florida, Quincy, FL, USA.
Zachary T BrymTropical Research and Education Center, University of Florida, Homestead, FL, USA.
Bonnie A AveryDepartment of Pharmaceutics, College of Pharmacy, University of Florida, Gainesville, FL, USA.
Christopher R McCurdyDepartment of Pharmaceutics, College of Pharmacy, University of Florida, Gainesville, FL, USA. Cmccurdy@cop.ufl.edu.
University of Florida · US

Funding

Using social networks to map and evaluate team science across CTSA hubsUL1TR001427 · NCATS · UNIVERSITY OF FLORIDA · PI MITCHELL, DUANE A. · 2015 to 2024
$37.2M
NCATS NIH HHS UL1 TR001427NCATS NIH HHS UL1TR001427
6 · The paper itself

Abstract

backgroundIn 2018, the Farm Bill mandated the United States Department of Agriculture to develop regulations governing the cultivation, processing, and marketing of industrial hemp. Industrial hemp is defined as Cannabis sativa L. with a total Δ-9-tetrahydrocannabinol (Δ-9-THC) content ≤0.3%. Therefore, for hemp to become an agricultural commodity, it is important to regulate production by developing standard methods for sampling and testing of the plant material.

methodsAn ultra-performance liquid chromatography-tandem mass spectrometry analytical method for the quantification of twelve cannabinoids was developed. The method was applied to a regulatory sampling trial of three hemp varieties cultivated for cannabidiol (CBD) production. Two samples were taken from 28 plants with one sample being flower only while the other was a composite sample that included flowers, leaves, and stems.

resultsThe assay method was validated for specificity, range, repeatability, reproducibility, and recovery in accordance with all applicable standards for analytical methods. The results of the regulatory study indicated a significant decrease in the concentration of total Δ-9-THC and total CBD of 0.09% and 1.32%, respectively, between a flower only and a composite sample.

conclusionsThere are many factors that may influence reported total Δ-9-THC content in industrial hemp. A robust analytical method was developed to analyze hemp samples in a trial regulatory study. The results indicate that the way hemp is sampled and analyzed may influence the legality of a crop, which could have negative economic and legal consequences.

Indexed as

CannabidiolCannabinoid assayCannabisHempLiquid chromatography–mass spectroscopyTetrahydrocannabinol

Identifiers

PMID33526142
PMCPMC7819288
OpenAlexW3113116880

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.