Comparison of Amerlex, NML, and Ames total thyroxine and triiodothyronine radioimmunoassay kits.

abstract：BACKGROUND:The stability of parathyroid hormone (PTH) in whole blood has not been well characterized. Previous studies show EDTA plasma samples to be more stable than serum samples. METHODS:Blood from 17 haemodialysis patients and five healthy volunteers was collected into serum separator tubes (SSTs) and potassium ED...

journal_title：Annals of clinical biochemistry

authors： English E,McFarlane I,Taylor KP,Halsall DJ

更新日期：2007-05-01 00:00:00

abstract：BACKGROUND:Hypercholesterolemia (plasma cholesterol concentration â¥5.2 mmol/L) is a risk factor for cardiovascular disease and stroke. Many different cholesterol self-tests are readily available at general stores, pharmacies and web shops. However, there is limited information on their analytical and diagnostic perfor...

journal_title：Annals of clinical biochemistry

authors： Kurstjens S,Gemen E,Walk S,Njo T,Krabbe J,Gijzen K,Elisen MGLM,Kusters R

更新日期：2021-01-21 00:00:00

abstract：:A 41-year-old lady presented with classical symptoms of a phaeochromocytoma and markedly elevated urinary adrenaline concentration. Urinary fractionated metanephrine and normetanephrine concentrations were within the normal reference range. Computed tomography of the abdomen/pelvis and I(123) meta-iodobenzylguanidine ...

journal_title：Annals of clinical biochemistry

authors： King TF,Shea PO,Sullivan EP,Srinivasan R,Griffin A,Fitzgerald R,Tormey W,Smith D

更新日期：2008-03-01 00:00:00

abstract：:Autosomal dominant hypercholesterolaemia is genetically heterogeneous, but most commonly (approximately 93%) caused by mutations in low-density lipoprotein receptor (LDLR), where the disease is known as familial hypercholesterolaemia (FH), or apolipoprotein B-100 (APOB) (approximately 5.5%), where the disease is known...

journal_title：Annals of clinical biochemistry

authors： Taylor A,Bayly G,Patel K,Yarram L,Williams M,Hamilton-Shield J,Humphries SE,Norbury G

更新日期：2010-09-01 00:00:00

abstract：:A simple procedure is described for the preparation of a stable precision quality control material for use in the measurement of level of ionised calcium in serum at or near the reference range. Repeat analyses on a Nova 2 ionised calcium analyser of serum pools stored at different temperatures over a period of three ...

journal_title：Annals of clinical biochemistry

authors： Fyffe JA,Jenkins AS,Bolland CJ,Dryburgh FJ,Gardner MD

更新日期：1981-03-01 00:00:00

abstract：:A recently introduced turbidimetric immunoassay using shell/core particles for determination of myoglobin (Turbiquant Myoglobin, Behringwerke, Marburg, Germany) was evaluated on the Behring Turbitimer analyzer. Intra-assay CV varied between 1.0% and 3.2%; interassay CV was between 2.0% and 3.6%. Linear results were ob...

journal_title：Annals of clinical biochemistry

authors： Delanghe J,Chapelle JP,el Allaf M,De Buyzere M

更新日期：1991-09-01 00:00:00

abstract：:Protoporphyrin and zinc-protoporphyrin were measured in the erythrocytes of normal subjects, workers exposed to lead and patients with iron deficiency and erythropoietic protoporphyria (EPP). Results showed significantly higher levels of zinc-protoporphyrin in the lead-exposed workers (P < 0.0001), patients with iron ...

journal_title：Annals of clinical biochemistry

authors： Nelson JC,Westwood M,Allen KR,Newton KE,Barth JH

更新日期：1998-05-01 00:00:00

abstract：:Using a high-performance liquid chromatography method, we measured seven commonly prescribed benzodiazepines (chlordiazepoxide, nitrazepam, nordiazepam, oxazepam, lorazepam, temazepam and diazepam) in 100 urine samples obtained from patients attending the Leeds Addiction Unit. All of the urines selected for investigat...

journal_title：Annals of clinical biochemistry

authors： Garretty DJ,Wolff K,Hay AW,Raistrick D

更新日期：1997-01-01 00:00:00

abstract：BACKGROUND:Serum ornithine carbamoyltransferase is a diagnostic marker of hepatic disorders due to its localization in periportal mitochondria. METHODS:We have developed a new method for the determination of serum ornithine carbamoyltransferase. It is based on the reverse reaction of ornithine carbamoyltransferase, us...

journal_title：Annals of clinical biochemistry

authors： Ishikawa H,Matsuzawa T,Ohashi K,Nagamura Y

更新日期：2003-05-01 00:00:00

abstract：:A number of cardiac interventional procedures are available for the treatment of angina, including percutaneous transluminal coronary angioplasty (PTCA), stent insertion and rotational atherectomy (RA). Variable degrees of myocardial cell injury during PTCA and stent insertion have been observed, based on rises in cre...

journal_title：Annals of clinical biochemistry

authors： Harris BM,Nageh T,Marsden JT,Thomas MR,Sherwood RA

更新日期：2000-11-01 00:00:00

abstract：:A high-pressure liquid chromatography procedure for the measurement of free catecholamines in urine is described. 'On-line' sample preparation using a cartesian robot combined with the ASTED process ensures minimal operator intervention and reduced costs. ...

journal_title：Annals of clinical biochemistry

authors： Green B,Cooper JD,Turnell DC

更新日期：1989-07-01 00:00:00

abstract：BACKGROUND:A convenient method for the measurement of sialic acid in plasma apoB-containing lipoproteins is described. METHODS:Dextran sulphate-Mg(2+) precipitation and enzymatic sialic acid assay were combined and applied to analysis of plasma from 96 healthy controls and 136 hyperlipidaemic subjects of types IIa (n=...

journal_title：Annals of clinical biochemistry

authors： Shishino K,Yoshioka Y,Hashimoto K,Ochi M,Aono K,Murase M,Osawa H,Makino H,Saheki S

更新日期：2005-07-01 00:00:00

abstract：BACKGROUND:The worldwide epidemic of obesity is a major public health concern and is persuasively linked to the rising prevalence of diabetes and cardiovascular disease. Obesity is often associated with an abnormal lipoprotein profile, which may be partly negated by pioglitazone intervention, as this can influence the ...

journal_title：Annals of clinical biochemistry

authors： McEneny J,McPherson PA,McGinty A,Hull SS,McCance DR,Young IS

更新日期：2013-01-01 00:00:00

abstract：:Background Detection of alcohol consumption in clients undergoing treatment for alcohol dependence can be difficult. The ethanol metabolites ethyl glucuronide and ethyl sulphate are detectable for longer in urine than either breath ethanol or urine ethanol. Our aim was to develop a liquid chromatography-tandem mass sp...

journal_title：Annals of clinical biochemistry

authors： Armer JM,Allcock RL

更新日期：2017-01-01 00:00:00

abstract：:An automated assay for serum amylase is described. Using the AutoAnalyzer II the method employs, as substrate, a solution of dyed amylopectin which is commercially available (DyAmyl-L). After incubation of serum and substrate at 55 degrees C, 1.0 mol/lKOH is introduced and the coloured products of enzymic hydrolysis a...

journal_title：Annals of clinical biochemistry

authors： Carney JA,Osibeluwo SA,Clements JA,Jay RF

更新日期：1977-11-01 00:00:00

abstract：:The number of known inherited metabolic disorders resulting in an organic aciduria has increased steadily over the past two decades. Prompt and reliable detection is both clinically and technically demanding but is essential if appropriate treatment is to be undertaken. This is the first study of laboratory performanc...

journal_title：Annals of clinical biochemistry

authors： Bonham JR,Downing M,Pollitt RJ,Manning NJ,Carpenter KH,Olpin SE,Allen JC,Worthy E

更新日期：1994-03-01 00:00:00

abstract：:Many attempt are now being made by external agencies to assess the quality of assay performance in hormone laboratories. Some of the problems associated with this are discussed and some remedies are proposed. ...

journal_title：Annals of clinical biochemistry

authors： Jeffcoate SL

更新日期：1981-01-01 00:00:00

abstract：:A study of conditions for the elution of apo A1 and B lipoproteins from dried blood spots has led to the development of an apo B/A1 ratio assay with results for dried blood spots which are comparable with serum assays. This assay has been developed to be suitable for large scale population screening. The concept of me...

journal_title：Annals of clinical biochemistry

authors： Hirst AD,Beswick K

更新日期：1993-09-01 00:00:00

abstract：:The extent of lipoprotein glycation was assessed in 82 patients diagnosed as diabetes mellitus type II. Glycated lipoprotein levels in serum were determined by agarose gel film electrophoresis in 48 non-diabetic control subjects, 56 diabetics with complications and 26 diabetics with no complications. All glycated lipo...

journal_title：Annals of clinical biochemistry

authors： Yeğin A,Ozben T

更新日期：1995-09-01 00:00:00

abstract：:It is our aim to summarise and discuss procedures for the evaluation of the concentration of free ionised calcium in serum or plasma. Stress is laid upon the interrelations and relative validity of the most common algebraic expressions to appraise the calcium status. The multitude of formulae proposed in the literatur...

journal_title：Annals of clinical biochemistry

authors： Vanstapel FJ,Lissens WD

更新日期：1984-09-01 00:00:00

abstract：:We investigated the contributions made by the entero-insular axis, proinsulin and the fractional hepatic extraction of insulin to the hyperinsulinaemia characteristic of polycystic ovarian syndrome (PCOS). We measured plasma glucose, gastric inhibitory polypeptide (GIP), glucagon-like peptide-1 (7-36 amide) (GLP-1(7-3...

journal_title：Annals of clinical biochemistry

authors： Gama R,Norris F,Wright J,Morgan L,Hampton S,Watkins S,Marks V

更新日期：1996-05-01 00:00:00

abstract：BACKGROUND:Haemoglobin A1c (HbA1c) is the only measure of glycaemic control used for many patients with diabetes, but it has limitations and might sometimes be misleading. HbA(1c) concentrations are influenced by conditions that alter red-cell life and there is evidence that biochemical variation in intracellular glyca...

journal_title：Annals of clinical biochemistry

authors： Macdonald DR,Hanson AM,Holland MR,Singh BM

更新日期：2008-07-01 00:00:00

abstract：BACKGROUND:The pneumatic tube system (PTS) has been implicated in inducing haemolysis. It is not known whether certain sample types are more susceptible to haemolysis than others. We assessed the level of haemolysis in commonly used sample types in the clinical biochemistry department when transported through the PTS. ...

journal_title：Annals of clinical biochemistry

authors： Sodi R,Darn SM,Stott A

更新日期：2004-05-01 00:00:00

abstract：:Free and total reduced concentrations of D-penicillamine have been measured in the plasma of rheumatoid arthritis patients by HPLC and electro-chemical detection. A reverse-phase ion-pair separation in conjunction with a dual porous graphite electrode satisfied the requirements of robustness, sensitivity, selectivity ...

journal_title：Annals of clinical biochemistry

authors： Webb BA,Richardson SJ,Haslock I

更新日期：1988-03-01 00:00:00

abstract：:γ-glutamyltransferase plays a key role in the synthesis and metabolism of extracellular glutathione, a major antioxidant in several defence mechanisms in the body. γ-glutamyltransferase is affected by environmental and genetic factors, and is raised when there is depletion of glutathione. Hence, it is a marker of oxid...

journal_title：Annals of clinical biochemistry

authors： Bulusu S,Sharma M

更新日期：2016-05-01 00:00:00

abstract：:Salivary theophylline concentrations in neonates were measured by a homogeneous enzyme immunoassay and compared with serum concentrations. Free serum theophylline concentrations were also compared with salivary concentrations and the values obtained were almost identical. Results using the immunoassay agreed well with...

journal_title：Annals of clinical biochemistry

authors： Thompson SJ

更新日期：1994-05-01 00:00:00

abstract：BACKGROUND:There are few data on oxidative stresses during and after pregnancy, although aggravation of autoimmune disease is implicated in oxidative stress and occurs frequently in the postpartum period. Thioredoxin (TRX) is a stress-inducible protein, and is used as a good biomarker for oxidative stress. To clarify t...

journal_title：Annals of clinical biochemistry

authors： Kuroda S,Watanabe M,Santo T,Shimizuishi Y,Takano T,Hidaka Y,Kimura T,Iwatani Y

更新日期：2010-01-01 00:00:00

abstract：:A group of international experts prepared two lists of drugs with their serum/plasma and urine concentrations, which should be used when evaluating the performance of a new laboratory method. The two lists were verified by running in vitro interference studies in three European laboratories on Hitachi instruments. The...

journal_title：Annals of clinical biochemistry

authors： Sonntag O,Scholer A

更新日期：2001-07-01 00:00:00

abstract：:A comparative evaluation of Beckman (A), Boehringer (B), and Calbiochem (C) kits for the enzymatic end-point determination of urea has been carried out. Acceptable within-day and day-to-day precision was obtained with all kits. The recoveries obtained fulfilled the criteria of Logan (CRC Critical Reviews in Clinical L...

journal_title：Annals of clinical biochemistry

authors： Fraser CG,Fudge AN

更新日期：1978-09-01 00:00:00

abstract：:The presence of antibodies in some patients' serum has long been known to be a potential source of interference in immunoassays, as shown by numerous case reports. These often appear after the introduction of a new analyte (e.g. troponin) and then decrease in number as the topic becomes exhausted. This highlights the ...

journal_title：Annals of clinical biochemistry

authors： Ismail AA,Walker PL,Cawood ML,Barth JH

更新日期：2002-07-01 00:00:00