Serum Creatinine
Serum Creatinine - Related Videos
01:25
Drug Dosing in Renal Diseases: Measurement of Serum Creatinine Concentration and Clearance
0 Views •
2025
In healthy individuals, serum creatinine levels remain stable due to a balance between its constant production—primarily from muscle metabolism—and renal excretion. Creatinine is freely filtered by the glomeruli, making it a valuable marker for estimating renal function. When the glomerular filtration rate (GFR) decreases, the kidneys can only eliminate less creatinine, causing serum levels to rise.Serum creatinine concentration is widely used to estimate creatinine clearance (Clcr), a...
01:28
Drug Dosing in Renal Diseases: Estimation of Glomerular Filtration Rate Based on Serum Creatinine Concentration
0 Views •
2025
Glomerular filtration rate (GFR) can be estimated from serum creatinine using the modification of diet in renal disease (MDRD) formula or the chronic kidney disease–epidemiology collaboration (CKD–EPI) equation. Both methods are widely used in clinical practice to assess kidney function and guide treatment decisions.The MDRD equation does not require weight or height measurements and is normalized to the body surface area of 1.73 m², considered the average adult surface area. This equation is...
06:44
Isolation of Small Noncoding RNAs from Human Serum
0 Views •
Cited by 13 •
2014
This protocol describes a method for extracting small RNAs from human serum. We have used this method to isolate microRNAs from cancer serum for use in DNA arrays and also singleplex quantitative PCR. The protocol utilizes phenol and guanidinium thiocyanate reagents with modifications to yield high quality RNA.
02:52
Development and Maintenance of Serum-Free Embryoid Bodies
0 Views •
2025
The video describes the procedure for developing serum-free embryoid bodies (SFEBs) from neuronal progenitor cells using various serum-free differentiation mediums or DM. DM-2 facilitates neurons' maturation and arrangement to form SFEBs, while DM-3 is used for further growth maintenance.
04:51
Measuring Immunoglobulin G Levels Against a Test Vaccine in a Mouse Serum
0 Views •
2025
This video demonstrates a method for assessing the antibody immune response to a novel nanoemulsion adjuvant vaccine in pre-immunized mice. Immunization enhances antibody response as confirmed by determining the IgG antibody titers.
FAQs
Creatinine enters the circulation mainly as a consequence of normal muscle metabolism, so its serum concentration reflects both production and renal handling. Because production is linked to muscle activity, clinicians interpret the measurement in the context of kidney filtration rather than treating the value as a direct, standalone measurement of renal function.
After creatinine reaches the circulation, it is filtered through the glomeruli and only minimally reabsorbed. This handling creates a practical relationship between serum concentration and filtration: when glomerular filtration decreases, less creatinine is cleared and its concentration can rise. That relationship supports its use in evaluating impaired renal function.
Serum creatinine provides an input for equations that estimate glomerular filtration rate. The laboratory value therefore contributes to a calculated assessment of filtration rather than serving as the equation itself. This approach helps clinicians translate a blood measurement into an estimate that supports evaluation of renal function in medical practice.
In suspected acute kidney injury, clinicians use serum creatinine to assess whether renal filtration may be impaired. A raised concentration can indicate reduced filtration because less creatinine is being cleared through the glomeruli. The result contributes to clinical evaluation of an acute change in kidney function rather than defining the entire clinical picture by itself.
For established or suspected chronic kidney disease, serum creatinine helps clinicians evaluate renal function and calculate an estimated glomerular filtration rate. Its value is particularly useful as part of an ongoing assessment, allowing kidney function to be considered during the evaluation and management of persistent renal impairment.
Monitoring serum creatinine during treatment or after exposure to potentially nephrotoxic substances helps assess whether renal filtration has changed. Because reduced filtration can increase the serum concentration, follow-up measurements can provide information about kidney function while a patient receives treatment or after a possible harmful exposure.