Evidence map›Paper›PMID 32133679›Full record

ArticleJournal of clinical laboratory analysis2020

A simple formula to correct for the effects of storage time and temperature on the insulin concentration.

Xiaoli Zeng, Qi Chen, Guozhong Gong, Fangyuan Yuan, Ting Wang, Guoyuan Zhang, Xiaoping Li, Dongsheng Wang, Qiang Wang

Open access · goldAbstract read
In one paragraph

Article in Journal of clinical laboratory analysis, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed, 1 pooled it
0.5field-weighted citation impact, top 30% 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

3 citing papers in PubMed, 1 synthesis or guideline pooled it, 4 citations in OpenAlex.

  1. Pooled it
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  3. 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

9 authors at 5 institutions in 1 country.

Xiaoli ZengDepartment of Laboratory Medicine, Affiliated Hospital of North Sichuan Medical College, Nanchong, China.ORCID https://orcid.org/0000-0001-6974-0400
Qi ChenDepartment of Laboratory Medicine, Affiliated Sichuan Ba-Yi Rehabilitation Center of Chengdu University of TCM, Chengdu, China.
Guozhong GongDepartment of Laboratory Medicine, Suining First People's Hospital, Suining, China.
Fangyuan YuanFaculty of Laboratory Medicine, Center for Translational Medicine, North Sichuan Medical college, Nanchong, China.
Ting WangFaculty of Laboratory Medicine, Center for Translational Medicine, North Sichuan Medical college, Nanchong, China.
Guoyuan ZhangDepartment of Laboratory Medicine, Affiliated Hospital of North Sichuan Medical College, Nanchong, China.
Xiaoping LiDepartment of Clinical Transfusion, Affiliated Hospital of North Sichuan Medical College, Nanchong, China.
Dongsheng WangDepartment of Laboratory Medicine, Sichuan Cancer Hospital & Institute, Chengdu, China.
Qiang WangDepartment of Laboratory Medicine, Affiliated Hospital of North Sichuan Medical College, Nanchong, China.ORCID https://orcid.org/0000-0001-9283-7729
North Sichuan Medical University · CNAffiliated Hospital of North Sichuan Medical College · CNChengdu University · CNSichuan Cancer Hospital · CNSuizhou Central Hospital · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo investigate the influence of storage time and temperature on plasma insulin levels and to establish a correction formula.

methodsVenous blood samples were taken from 20 volunteers and processed as follows: whole blood samples, centrifuged samples, and separated plasma samples were stored at 4°C or 25°C. Insulin levels were determined by direct chemiluminescence at 0, 0.5, 1, 2, 4, and 8 hours. According to the correlation between the insulin concentration ratio and storage time, correction formulas for the insulin concentration were established. To verify the test, the venous blood samples of another 33 volunteers were processed in the same way. The insulin levels of the samples were corrected after 3, 6, 12, and 24 hours and compared with the value at 0 hours to verify the feasibility of the corrected formula.

resultsWith the prolongation of storage time, the insulin levels of the whole blood samples at 4°C or 25°C and of the centrifuged samples at 25°C decreased gradually (P < .001), and the insulin level correction formulas were C

conclusionsThe insulin levels of the whole blood samples at 4°C or 25°C and of the plasma samples at 25°C gradually decreased with storage time. The effect of storage time on the insulin level can be reduced with the correction formulas.

Indexed as

AdultBlood Specimen CollectionClinical Laboratory TechniquesFemaleHemoglobinsHumansInsulinMalePhlebotomyTemperatureTime FactorsYoung AdultHemoglobinsInsulincorrection formulainsulintemperaturetime

Identifiers

PMID32133679
PMCPMC7370719
OpenAlexW3009959937

What OpenQuestion holds

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LicenceCC BY-NC
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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.