Abstract：
BACKGROUND:Researchers are debating if fecal calprotectin results are useful for infant patients, especially in screening for necrotizing enterocolitis (NEC). Currently, none of the FDA-approved calprotectin assays provide a cut-off for infant patients. We retrospectively analyzed data from a reference laboratory and university hospital to investigate if a cut-off could be established for infant patients. METHODS:Data from a national reference laboratory of 5144 test results for fecal calprotectin were analyzed for infant patients, and a cut-off was estimated based on the distribution of results. Additionally, a literature proposed cut-off of 226 μg/g was also considered. Validation of either cut-off was attempted by review of the electronic medical record of our university hospital for 110 infant patients with results for fecal calprotectin. RESULTS:Infants had a high percentage of elevated fecal calprotectin results when using the adult cut-offs set by the manufacturer. A cut-off of 247 μg/g was estimated based on the reference laboratory results for infants 0-2 months old, which is similar to a literature proposed cut-off of 226 μg/g. However, the positive predictive value (PPV) for both cut-offs was <0.6 when retrospectively analyzing data from a university hospital. CONCLUSION:Due to the low PPVs, the two infant-specific cut-offs for fecal calprotectin would not be useful to screen for NEC in infants at our university hospital.
journal_name
Clin Biochemjournal_title
Clinical biochemistryauthors
Goold E,Pearson L,Johnson LMdoi
10.1016/j.clinbiochem.2020.06.015subject
Has Abstractpub_date
2020-10-01 00:00:00pages
51-54eissn
0009-9120issn
1873-2933pii
S0009-9120(20)30782-7journal_volume
84pub_type
杂志文章abstract：BACKGROUND:Histamine (HA) is a small amine playing an important role in anaphylactic reactions. In order to identify and quantify HA in plasma matrix, different methods have been developed but present several disadvantages. Here, we developed an alternative method using liquid chromatography coupled with an ultra-high ...
journal_title：Clinical biochemistry
pub_type： 杂志文章
doi：10.1016/j.clinbiochem.2015.08.012
更新日期：2016-01-01 00:00:00
abstract：OBJECTIVES:The relative proportion in percentage of the isoenzyme A of beta-hexosaminidase (Hex) is the single discriminatory function most frequently used for the biochemical screening of heterozygote Tay-Sachs disease carriers. It has been suggested that the assay of the Hex isoenzymes in homogeneous cell preparation...
journal_title：Clinical biochemistry
pub_type： 杂志文章
doi：10.1016/j.clinbiochem.2005.05.016
更新日期：2005-10-01 00:00:00
abstract：OBJECTIVES:The aims of this study were to develop a new technique for determination of iron content of serum ferritin (ICF, micromol Fe/mg protein) and to investigate relations between ICF and clinical status in patients with hyperferritinemia. METHODS:ICF values were determined by a combination of immunoprecipitation...
journal_title：Clinical biochemistry
pub_type： 杂志文章
doi：10.1016/s0009-9120(02)00380-6
更新日期：2002-10-01 00:00:00
abstract：BACKGROUND:Polycyclic aromatic hydrocarbons (PAHs), some ubiquitous environmental contaminants are capable to cause oxidative stress, during its metabolism. It is believed that many diseases that have a common origin in oxidative stress begin in childhood. Considering oxidative stress evolved during PAHs metabolism as ...
journal_title：Clinical biochemistry
pub_type： 杂志文章
doi：10.1016/j.clinbiochem.2007.11.017
更新日期：2008-02-01 00:00:00
abstract：BACKGROUND:The aldosterone/renin ratio (ARR) is recommended to screen for primary aldosteronism (PA) in hypertension. We estimated fully automated chemiluminescence immunoassays (CLIA) for plasma aldosterone concentrations (PAC) and plasma direct renin concentrations (PRC) and investigated their reference intervals in ...
journal_title：Clinical biochemistry
pub_type： 杂志文章
doi：10.1016/j.clinbiochem.2018.04.016
更新日期：2018-06-01 00:00:00
abstract：OBJECTIVES:Blood sampling/handling alters matrix metalloproteinases (MMP) and tissue inhibitors of metalloproteinases (TIMP) expression. The aim of this study is to evaluate the effects of high molecular weight heparin on MMP and TIMP expression in blood. DESIGN AND METHODS:We analyzed by gelatin zymography and ELISA ...
journal_title：Clinical biochemistry
pub_type： 杂志文章
doi：10.1016/j.clinbiochem.2008.09.104
更新日期：2008-12-01 00:00:00
abstract：:A method is described for the determination of low plasma levels of adenosine-5'-diphosphate (ADP) using a Dupont Biometer to measure luminescence produced by the luciferin-luciferase reaction. Endogenous ATP is removed by incubation with luciferase. The remaining ADP is then quantitated, following its conversion to A...
journal_title：Clinical biochemistry
pub_type： 杂志文章
doi：10.1016/s0009-9120(78)80027-7
更新日期：1978-10-01 00:00:00
abstract：OBJECTIVES:The haphazard distribution of fibrous tissue can interfere with quantitative methods for evaluating hepatic fibrosis. Inter-sample variation may represent a crucial issue when hydroxyproline measurement is used to quantify fibrosis. A comparative study of the hydroxyproline levels in normal and fibrotic rats...
journal_title：Clinical biochemistry
pub_type： 杂志文章
doi：10.1016/j.clinbiochem.2006.08.002
更新日期：2006-12-01 00:00:00
abstract：OBJECTIVES:Newly presented solid-phase extraction methods (Solid Phase Disc Extraction, SPEC-Plus, Multi-Modal, and Solid Phase Micro Extraction, SPME have been checked with respect to their applicability to clinical toxicological analysis. In comparison with conventional liquid/liquid-extraction and a common mixed-pha...
journal_title：Clinical biochemistry
pub_type： 杂志文章
doi：10.1016/s0009-9120(96)00096-3
更新日期：1996-12-01 00:00:00
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journal_title：Clinical biochemistry
pub_type： 杂志文章
doi：10.1016/j.clinbiochem.2017.07.005
更新日期：2017-12-01 00:00:00
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journal_title：Clinical biochemistry
pub_type： 临床试验,杂志文章
doi：10.1016/s0009-9120(98)00096-4
更新日期：1999-03-01 00:00:00
abstract：OBJECTIVES:The aim of the study was to evaluate the concentration of interleukin 12 (IL-12), the activity of phospholipase A(2) (PLA(2)), and platelet-activating factor acetylhydrolase (PAF-AH) in type 1 diabetes (DM1) patients treated with intensive insulin therapy. DESIGN AND METHODS:Studied parameters were measured...
journal_title：Clinical biochemistry
pub_type： 杂志文章
doi：10.1016/j.clinbiochem.2009.07.023
更新日期：2009-11-01 00:00:00
abstract：:A commercially available assay (Sigma) for urinary oxalates based on the oxalate oxidase/peroxidase catalyzed reaction produced, in our hands, recoveries of added oxalate that varied from patient to patient. A modification of the assay is reported that involves the chromatographic separation of interfering substances,...
journal_title：Clinical biochemistry
pub_type： 杂志文章
doi：10.1016/0009-9120(90)80032-e
更新日期：1990-04-01 00:00:00
abstract：:Senescence is a process which, until quite recently, has been the subject of little scientific investigation. Even the word "senescence" is difficult to define, and complex methodological pitfalls have impeded progress. In the past few years, there have been exciting advances in understanding the physiological, cell b...
journal_title：Clinical biochemistry
pub_type： 杂志文章,评审
doi：10.1016/0009-9120(92)80047-k
更新日期：1992-04-01 00:00:00
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journal_title：Clinical biochemistry
pub_type： 杂志文章
doi：10.1016/j.clinbiochem.2009.05.019
更新日期：2009-09-01 00:00:00
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journal_title：Clinical biochemistry
pub_type： 杂志文章
doi：10.1016/j.clinbiochem.2006.08.013
更新日期：2006-12-01 00:00:00
abstract：BACKGROUND:Vitamin B12 insufficiency/deficiency is common in mixed patient populations. However there is no single marker which can reliably diagnose B12 insufficiency/deficiency. Elevated concentrations of methylmalonic acid (MMA) are considered the most representative marker of metabolic vitamin B12 insufficiency, bu...
journal_title：Clinical biochemistry
pub_type： 杂志文章
doi：10.1016/j.clinbiochem.2013.08.006
更新日期：2014-01-01 00:00:00
abstract：:A simple and rapid method for serum sex hormone binding globulin (SHBG) was developed. Sera from pregnant women were pooled and the SHBG concentration was measured by Rosner's method. This pool was diluted with charcoal-treated and heated serum to give standards ranging in concentrations from 26.8-0.8 micrograms/L. Tw...
journal_title：Clinical biochemistry
pub_type： 杂志文章
doi：10.1016/s0009-9120(85)80031-x
更新日期：1985-10-01 00:00:00
abstract：OBJECTIVES:Drug screening in neonates is traditionally performed using meconium, but cord tissue has been proposed as an alternative specimen. This study compares the detection of drugs in a large number of paired meconium and umbilical cord tissue samples from subjects at risk of in utero drug exposure. DESIGN AND ME...
journal_title：Clinical biochemistry
pub_type： 杂志文章
doi：10.1016/j.clinbiochem.2017.03.006
更新日期：2017-09-01 00:00:00
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journal_title：Clinical biochemistry
pub_type： 杂志文章
doi：10.1016/j.clinbiochem.2004.09.014
更新日期：2005-01-01 00:00:00
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journal_title：Clinical biochemistry
pub_type： 杂志文章
doi：10.1016/s0009-9120(97)00074-x
更新日期：1997-08-01 00:00:00
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journal_title：Clinical biochemistry
pub_type： 杂志文章
doi：10.1016/j.clinbiochem.2010.09.012
更新日期：2010-12-01 00:00:00
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journal_title：Clinical biochemistry
pub_type： 杂志文章
doi：10.1016/j.clinbiochem.2007.09.008
更新日期：2007-12-01 00:00:00
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journal_title：Clinical biochemistry
pub_type： 杂志文章,评审
doi：10.1016/0009-9120(95)00022-2
更新日期：1995-08-01 00:00:00
abstract：BACKGROUND:High levels of intact and cleaved forms of the urokinase-type plasminogen activator receptor (uPAR) in both tissue and blood are associated with poor survival in several cancer diseases. The prognostic significance of uPAR in cholangiocarcinoma is unknown. The aims of this study were to determine if pre-trea...
journal_title：Clinical biochemistry
pub_type： 杂志文章
doi：10.1016/j.clinbiochem.2014.01.030
更新日期：2014-05-01 00:00:00
abstract：:We report a case of metastatic adenocarcinoma of the prostate with widespread bony and hepatic involvement having extremely high BB isoenzyme of creatine kinase in serum (2405 U/liter). The serum LD5/LD1 ratio is greater than one, with total LD activity more than twenty-five fold the normal value. The homogenate of pr...
journal_title：Clinical biochemistry
pub_type： 杂志文章
doi：10.1016/s0009-9120(80)90502-0
更新日期：1980-02-01 00:00:00
abstract：OBJECTIVE:MicroRNA-331 (miR-331) has shown regulatory activity against several genes whose expression has been claimed to be deregulated in breast tumors, including that of epidermal growth factor receptor 2 (HER2). Herein, the clinical value of miR-331 expression was investigated by analyzing its levels in breast beni...
journal_title：Clinical biochemistry
pub_type： 杂志文章
doi：10.1016/j.clinbiochem.2018.07.008
更新日期：2018-09-01 00:00:00
abstract：:Comparison of the turbidimetric immunoassay of haptoglobin with a reference method (the RID technique with appropriate correction for phenotype) clearly showed the turbidimetric assay to be phenotype-dependent. Correction factors for the three main phenotypes were calculated and reference values determined. The observ...
journal_title：Clinical biochemistry
pub_type： 杂志文章
doi：10.1016/s0009-9120(87)80006-1
更新日期：1987-08-01 00:00:00
abstract：OBJECTIVE:The purpose of our study was to investigate the serum levels of soluble a-proliferation-inducing ligand (sAPRIL) in patients with colorectal cancer (CRC), benign intestinal disease and healthy volunteers and explore the potential possibility of sAPRIL severing as a CRC biomarker. METHODS:Our investigation wa...
journal_title：Clinical biochemistry
pub_type： 杂志文章
doi：10.1016/j.clinbiochem.2013.06.008
更新日期：2013-10-01 00:00:00
abstract：BACKGROUND:Numerous etiologies are implicated in the complications of diabetes. A link between diabetes and the predisposition to certain cancers, including colon cancer, has been established during the last decade. However, the relationship between fecal occult blood test (FOBT), a screening method used principally fo...
journal_title：Clinical biochemistry
pub_type： 杂志文章
doi：10.1016/j.clinbiochem.2016.10.005
更新日期：2017-01-01 00:00:00
