scholarly journals Negative Interference in a Kinetic Jaffé Method for Serum Creatinine Determination

Author(s):  
A M Cruickshank ◽  
F C Ballantyne ◽  
A Shenkin
Medicine ◽  
2015 ◽  
Vol 94 (23) ◽  
pp. e905 ◽  
Author(s):  
Xiuzhi Guo ◽  
Li’an Hou ◽  
Xinqi Cheng ◽  
Tianjiao Zhang ◽  
Songlin Yu ◽  
...  

1991 ◽  
Vol 37 (2) ◽  
pp. 236-238 ◽  
Author(s):  
Carlo Franzini ◽  
Anna M Morelli ◽  
Glanpaolo Cattozzo

Abstract In assessing interference from bilirubin, the use of a synthetic soluble derivative (ditaurobilirubin, DTB) is recommended as a surrogate for the natural conjugates (Bc). We compared the interference effect of unconjugated bilirubin (Bu), Bc, and DTB, using six mechanized methods for serum creatinine measurement. No significant interference was noted in methods that include removal of proteins or in an enzymatic method involving NADH oxidation. Heavy (negative) interference was observed in an alkaline picrate method, and in direct enzymatic methods based on hydrogen peroxide measurement: interference was always more pronounced in the presence of the two soluble derivatives (Bc and DTB), whose interference was of the same magnitude. These results point out the utility of testing for bilirubin interference by using soluble derivatives, in addition to Bu, and suggest the feasibility of using DTB as a surrogate for Bc for this purpose.


2021 ◽  
Vol 10 (8) ◽  
pp. 1689
Author(s):  
Trushil Shah ◽  
Madhusudhanan Narasimhan ◽  
Mary Latha Rathinam ◽  
Karen Relle ◽  
Melanie Kim ◽  
...  

An accurate creatinine (Cr) estimate is pivotal for the assessment of renal function. Both patient- and practice-spawned factors palliate the test accuracy of serum creatinine (sCr) and can erratically represent actual kidney function. This study evaluated the caregivers’ awareness of enzymatic serum creatinine (E-sCr) assay interfering in dopamine/dobutamine (DD)-infused patient samples and the frequency of such interference in a critical care setting. We conducted an sCr awareness survey among UT Southwestern physicians, nurses, and pharmacists. We then performed a cross-sectional E-sCr comparison against the kinetic Jaffe method using the DD-infused patient samples collected from central venous catheters (CVC), peripherally inserted central catheter (PICC) lines, and the peripheral vein (PV). We retrospectively compared the longitudinal E-sCr results of the CVC/PICC draws with the corresponding blood urea nitrogen (BUN) levels. The survey results show a significant lack of awareness among caregivers about the negative interference of DD infusions on E-sCr. Cross-sectional E-sCr assessment relative to the Jaffe method displayed a negative interference in 12% of CVC/PICC line samples (7/57 DD-infused patients) compared to none in the PV draws. A longitudinal assessment of E-sCr, BUN, and potassium (K) levels from CVC/PICC line samples further confirmed a spurious decrease for E-sCr in about 12/50 (24%) patients who did not show a concurrent BUN or K decrease. The results suggest that a direct PV sampling accompanied by clinical laboratory-directed proactive discussion/activities can foster awareness among caregivers and eschew the false E-sCr estimates in DD-infused patients.


1992 ◽  
Vol 38 (1) ◽  
pp. 169-170 ◽  
Author(s):  
Ryo Fushimi ◽  
Akemi Suminoe ◽  
Masayoshi Yasuhara ◽  
Etsuji Suehisa ◽  
Masahiko Matsui ◽  
...  

PEDIATRICS ◽  
1995 ◽  
Vol 96 (6) ◽  
pp. 1156-1158
Author(s):  
John N. van den Anker ◽  
Ronald de Groot ◽  
Henriette M. Broerse ◽  
Pieter J. J. Sauer ◽  
Bert J. van der Heijden ◽  
...  

Dosage regimens of drugs that are cleared mainly by glomerular filtration as well as fluid management in preterm infants should be based on the glomerular filtration rate (GFR) of the individual patient. However, GFR measurements and collection of urine in newborns are difficult to perform. The 24 to 48 h continuous inulin infusion technique does not require the collection of urine and is considered the most reliable indicator of GFR.1,2 This method is invasive, time-consuming, and expensive. In contrast, serum creatinine measurements can be obtained easily and determined quickly in the clinical chemistry laboratory. Most laboratories use an automated kinetic Jaffé method, which is subject to negative interference by plasma hemoglobin above 0.06 mmol/L, and to negative interference by bilirubin (about 35 µmol/L by a serum bilirubin of about 100 µmol/L).


2012 ◽  
Vol 5 (1) ◽  
pp. 37-43
Author(s):  
ABMM Alam ◽  
M Moniruzzaman ◽  
MB Alam ◽  
N Islam ◽  
F Khatoon ◽  
...  

Background: CIN has gained increased attention in the clinical setting, particularly during cardiac intervention but also in many other radiological procedures in which iodinated contrast media are used. There is at present good clinical evidence from well-controlled randomized studies that CIN is a common cause of acute renal dysfunction.Methodology: This was a prospective study conducted among the patients who underwent coronary angiography and percutaneous coronary intervention in the Department of Cardiology, Dhaka Medical College Hospital during January 2010 to December 2010. A total of 111 patients age range from 25 to 75 years were included in the study. Serum creatinine level at baseline and at the end of 48 hours was done in all these patients. Study population was divided into two groups according to development of acute kidney injury (AKI). Group-I = AKI, Group II = Not developed AKI. Results: AKI developed 11.7% of the study patient. DM and Preexisting renal insufficiency were significantly higher in group I patients. HTN was (61.5% Vs 44.9%) higher in group I but not significantly. History of ACE inhibitor/ARB, NSAID intake and LVEF <40% were significantly higher in group I patients. The mean±SD volume of CM (Contrast Media) were 156.9±44.8 ml and 115.4±30.0 ml in group I and group II respectively, which was significant. The mean±SD of serum creatinine after 48-72 hours of CAG/PCI was 1.4±0.37 mg/dl and 1.1±0.2 mg/dl in group I and group II respectively. The serum creatinine level increased significantly (p<0.05) after 48-72 hours of CAG/PCI in group I. In group II, S. creatinine level increased but not significant (p>0.05). Impaired renal function was found 76.9% and 2.0% in group I and group II respectively. DM, HTN, preexisting renal insufficiency, ACE inhibitor/ARB, NSAIDs, contrast volume (>150 ml), eGFR (<60 ml/min/ 1.73m2) and LVEF (<40%) are significantly (p0.05) associated for CIN development.Conclusion: CIN is an iatrogenic but preventable disorder results from the administration of contract media. Although rare in the general population, CIN occurs frequently in patients with underlying renal dysfunction and diabetes. In patients with pre angiographic normal renal function, the prevalence is low but in pre-existing renal impairment it may pose a serious threat. Thus risk factors are synergistic in their ability to predispose to the development of CIN. A careful risk-benefit analysis must always be performed prior to the administration of contrast media to patients at risk for CIN. DOI: http://dx.doi.org/10.3329/cardio.v5i1.12227 Cardiovasc. j. 2012; 5(1): 37-43


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