The costing of tests in a laboratory for clinical chemistry and haematology.

abstract：:It is crucially important to detect subarachnoid haemorrhage (SAH) in all patients in whom it has occurred to select patients for angiography and preventative surgery. A computerized tomography (CT) scan is positive in up to 98% of patients with SAH presenting within 12 h, but is positive in only 50% of those presenti...

journal_title：Annals of clinical biochemistry

authors： Cruickshank A,Auld P,Beetham R,Burrows G,Egner W,Holbrook I,Keir G,Lewis E,Patel D,Watson I,White P,UK NEQAS Specialist Advisory Group for External Quality Assurance of CSF Proteins and Biochemistry.

更新日期：2008-05-01 00:00:00

abstract：BACKGROUND:We evaluated the diagnostic discrimination of a new micro-flow cell device (Nanoduct) which measures sweat conductivity in situ at a regional referral centre for cystic fibrosis (CF). METHODS:The device was evaluated in comparison to the measurement of sweat chloride with the established quantitative piloca...

journal_title：Annals of clinical biochemistry

authors： Losty HC,Wheatley H,Doull I

更新日期：2006-09-01 00:00:00

abstract：:We examined the reactivity of human serum albumin-bound bilirubin and its photoisomers as substrates for a direct bilirubin assay using bilirubin oxidase. The reduction of (EZ)-cyclobilirubin reached 100% 5 min after addition of the enzyme at any pH tested (3.5-7.4) in 0.1 mol/L phosphate buffer, whereas the reduction...

journal_title：Annals of clinical biochemistry

authors： Itoh S,Kusaka T,Imai T,Isobe K,Onishi S

更新日期：2000-07-01 00:00:00

abstract：:We evaluated a novel assay for the measurement of 1,25 dihydroxyvitamin D (1,25 (OH)2D). Immunoextraction of 1,25(OH)2D is performed using a mini column containing a solid-phase monoclonal antibody followed by radioimmunoassay (RIA) using an 125I-labelled 1,25(OH)2D derivative tracer and Sac-cell separation. The mean ...

journal_title：Annals of clinical biochemistry

authors： Fraser WD,Durham BH,Berry JL,Mawer EB

更新日期：1997-11-01 00:00:00

abstract：:An evaluation of the Amerlex system for determination of total thyroxine (T4) and total triiodothyronine (T3) is described. The within- and between-batch precisions were acceptable, and analyses of quality control material and linearity studies demonstrated good accuracy at the clinical decision levels. The correlatio...

journal_title：Annals of clinical biochemistry

authors： Wilke TJ,Turnbull PA

更新日期：1982-03-01 00:00:00

abstract：BACKGROUND:Potassium is usually the most important analyte affected by in vitro haemolysis and the result obtained may falsely indicate or disguise a life-threatening abnormality and so give rise to inappropriate treatment. The purpose of the study was to provide a solution to the problem of reporting potassium on haem...

journal_title：Annals of clinical biochemistry

authors： Dimeski G,Clague AE,Hickman PE

更新日期：2005-03-01 00:00:00

abstract：:Plasma C1 inhibitor (C1-INH) was determined in 64 patients with different malignant diseases and in 58 healthy persons. C1-INH antigen concentration was measured by radial immunodiffusion (RID), whereas its functional activity was assayed with chromogenic substrate. Within-run and day-to-day precision of both methods ...

journal_title：Annals of clinical biochemistry

authors： Starcević D,Jelić-Ivanović Z,Kalimanovska V

更新日期：1991-11-01 00:00:00

abstract：:Two cases of hypercholesterolaemic patients are presented in whom raised plasma creatine kinase was noted during treatment with statins. The plasma creatine kinase failed to fall following cessation of therapy. Further investigation revealed the aetiology of the raised plasma creatine kinase to be due to previously un...

journal_title：Annals of clinical biochemistry

authors： Barth JH,Brownjohn AM,Jamieson DR

更新日期：2003-09-01 00:00:00

abstract：BACKGROUND:Biological variation of an analyte is an important determinant of its usefulness. Intraindividual variation in serum thyroid hormones, parathyroid hormone (PTH) and insulin-like growth factor-1 (IGF-1) in healthy subjects was determined in this study. METHODS:Blood samples were taken at weekly intervals for...

journal_title：Annals of clinical biochemistry

authors： Ankrah-Tetteh T,Wijeratne S,Swaminathan R

更新日期：2008-03-01 00:00:00

abstract：:The effects of inhibition of inosine monophosphate dehydrogenase (IMPDH), the rate-limiting enzyme in guanine nucleotide de novo synthesis, on cell growth, cell viability, endogenous nucleotide concentrations and concentrations of extracellular nucleosides and bases were studied in Molt F4 human malignant lymphoblasts...

journal_title：Annals of clinical biochemistry

authors： Stet EH,De Abreu RA,Bökkerink JP,Lambooy LH,Vogels-Mentink TM,Keizer-Garritsen JJ,Trijbels FJ

更新日期：1994-03-01 00:00:00

abstract：BACKGROUND:Pharmacometabonomics is a new branch of science, first described in 2006 and defined as 'the prediction of the effects of a drug on the basis of a mathematical model of pre-dose metabolite profiles'. Pharmacometabonomics has been used to predict drug metabolism, pharmacokinetics (PK), drug safety and drug ef...

journal_title：Annals of clinical biochemistry

authors： Everett JR,Loo RL,Pullen FS

更新日期：2013-11-01 00:00:00

abstract：:We developed a new simple assay for potassium ion in serum using urea amidolyase (UAL) from yeast sp. The method is based on activation of the enzyme by potassium ion. We eliminated endogenous ammonium ion by use of glutamate dehydrogenase (GLDH), and then monitored the production of ammonium ion by UAL, urea, ATP, bi...

journal_title：Annals of clinical biochemistry

authors： Kimura S,Iyama S,Yamaguchi Y,Hayashi S,Fushimi R,Amino N

更新日期：1997-07-01 00:00:00

abstract：:Immunoreactive melatonin has been studied in normal human volunteers, both men and women, at different times of day and different times of the year. At 2400, but not at 0800 or 1200, there are very large inter-individual variations in mean levels, the maximum difference being fivefold. Intra-individual variations are ...

journal_title：Annals of clinical biochemistry

authors： Arendt J,Wirz-Justice A,Bradtke J,Kornemark M

更新日期：1979-11-01 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：:Seventeen laboratories in the British Isles participated in a study to compare six different commercially available immunoassays for serum lipoprotein(a) (Lp(a)) and to establish reasons for the variations in the measurement of serum Lp(a) concentrations. Pooled serum was distributed neat and after dilution at a centr...

journal_title：Annals of clinical biochemistry

authors： Mackness MI,Bhatnagar D,Weiringa G,MBewu A,Haynes B,Durrington PN

更新日期：1996-01-01 00:00:00

abstract：OBJECTIVE:The initial discovery of leptin (1994) has given rise to a substantial number of published studies. This study aimed at identifying the published data on the reference ranges of total, free and bound leptin concentration in the healthy prepubertal population. METHODS:A search was conducted on original Englis...

journal_title：Annals of clinical biochemistry

authors： Venner AA,Doyle-Baker PK,Lyon ME,Fung TS

更新日期：2009-01-01 00:00:00

abstract：:The effect of progestins on intracellular corticosteroid-binding globulin (CBG) mRNA expression in an endometrial cancer cell line (Ishikawa) was examined in an attempt to understand the biological effects of high-dose progestins in the treatment of well-differentiated uterine endometrial cancers. Oestradiol-17 beta (...

journal_title：Annals of clinical biochemistry

authors： Misao R,Nakanishi Y,Fujimoto J,Tamaya T

更新日期：1998-09-01 00:00:00

abstract：:This review describes the development and application of a novel test to determine levels of human immunoreactive trypsin, an enzyme produced solely by the pancreas, in biological fluids. Being organ-specific, the assay of immunoreactive trypsin should be an ideal marker of pancreatic function, and this is supported b...

journal_title：Annals of clinical biochemistry

authors： Stagg BH,Wood TP

更新日期：1979-05-01 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：:Measurement of urine-free (unconjugated) cortisol (UFC) excretion is widely used in the investigation of hypercortisolaemia. We have measured 24 h UFC excretion in normal healthy individuals using a radioimmunoassay (RIA) method claimed to be suitable for unextracted urine. Significantly higher rates of excretion were...

journal_title：Annals of clinical biochemistry

authors： Lamb EJ,Noonan KA,Burrin JM

更新日期：1994-09-01 00:00:00

abstract：:The seasonal variation of serum 25-hydroxy vitamin D3 and 1,25-dihydroxy-vitamin D has been investigated. Blood was taken from 27 healthy volunteers, aged 21-44 years old at 3 monthly intervals over a period of 1 year. A scrolling monthly programme with 12 quarterly (3 month) time periods was developed. A summer assoc...

journal_title：Annals of clinical biochemistry

authors： Hine TJ,Roberts NB

更新日期：1994-01-01 00:00:00

abstract：:Haptoglobin is an acute-phase protein with three major phenotypes: Hp 1-1, Hp 2-1 and Hp 2-2. Studies have shown that functional differences between these phenotypes have important consequences in a number of pathological disorders (e.g. cardiovascular disease, autoimmune disorders, infectious disease), making phenoty...

journal_title：Annals of clinical biochemistry

authors： Wassell J,Keevil B

更新日期：1999-09-01 00:00:00

abstract：:The analysis of serum albumin by bromocresol purple (BCP), by bromocresol green (BCG), and by electroimmunoassay (EIA) has been compared in a mixed group of 100 hospital patients. Good agreement between the immunochemical and BCP methods, but a positive bias with the BCG method led to routine use of the BCP method. In...

journal_title：Annals of clinical biochemistry

authors： Wells FE,Addison GM,Postlethwaite RJ

更新日期：1985-05-01 00:00:00

abstract：BACKGROUND:Thiopurine methyltransferase (TPMT) catalyses the S-methylation of 6-thiopurine drugs, which are commonly used in the treatment of autoimmune diseases, leukaemia and organ transplantation. TPMT activity is polymorphic as a result of gene mutations. Ethnic variations in phenotype and genotype have been identi...

journal_title：Annals of clinical biochemistry

authors： Laróvere LE,de Kremer RD,Lambooy LH,De Abreu RA

更新日期：2003-07-01 00:00:00

abstract：:Simultaneous localisation of the isoenzymes of alkaline phosphatase and gamma-glutamyl transferase was carried out on 173 serum samples from patients with hepatobiliary and bone disease to determine (i) if a better discrimination of the underlying pathology could be obtained by such an approach, and (ii) if the pathol...

journal_title：Annals of clinical biochemistry

authors： Baines M

更新日期：1980-01-01 00:00:00

abstract：:17-Hydroxyprogesterone (17-OHP) is an intermediate steroid in the adrenal biosynthetic pathway from cholesterol to cortisol and is the substrate for steroid 21-hydroxylase. An inherited deficiency of 21-hydroxylase leads to greatly increased serum concentrations of 17-OHP, while the absence of cortisol synthesis cause...

journal_title：Annals of clinical biochemistry

authors： Honour JW

更新日期：2014-07-01 00:00:00

abstract：BACKGROUND:LC-MS/MS is rapidly becoming the technology of choice for measuring steroid hormones. We have developed a rapid LC-MS/MS assay for the routine analysis of serum cortisol. We have used this assay to investigate the effects of gender and exogenous steroid interference on the immunoassay measurement of serum co...

journal_title：Annals of clinical biochemistry

authors： Owen LJ,Adaway JE,Davies S,Neale S,El-Farhan N,Ducroq D,Evans C,Rees DA,MacKenzie F,Keevil BG

更新日期：2013-07-01 00:00:00

abstract：:Auto-antibodies to oxidized low-density lipoprotein (ox-LDL) are thought to play a pivotal role in the pathogenesis of atherosclerosis. This study investigates the value of auto-antibodies to ox-LDL as a predictive marker of atherosclerosis in patients with both homozygous and heterozygous familial hypercholesterolaem...

journal_title：Annals of clinical biochemistry

authors： Paiker JE,Raal FJ,von Arb M

更新日期：2000-03-01 00:00:00

abstract：BACKGROUND:The reporting interval is the incremental value chosen in reporting analyte concentration. Reporting intervals for different analytes are often inappropriately narrow, when analytical imprecision and biological variability are considered. METHODS:We have used statistical techniques to determine intervals fo...

journal_title：Annals of clinical biochemistry

authors： Badrick T,Wilson SR,Dimeski G,Hickman PE

更新日期：2004-09-01 00:00:00

abstract：:A case report is presented of a 37-year-old man who, largely by chance, was found to have a marked mixed hyperlipidaemia. As a teenager he had been treated for apparent idiopathic growth hormone deficiency, but had also never developed secondary sexual characteristics. Pituitary hormone measurement was now consistent ...

journal_title：Annals of clinical biochemistry

authors： Kilpatrick ES,Patmore JE,Rowland-Hill C,Atkin SL

更新日期：2004-07-01 00:00:00