Pure Chromatography
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Creatine and Creatinine in Human Urine on Raptor HILIC-Si by LC-MS/MS
Peaks | tR (min) | Precursor Ion | Product Ion | Product Ion | |
---|---|---|---|---|---|
1. | Creatinine![]() | 0.537 | 114.0 | 44.3 | 86.0 |
2. | Creatine![]() | 1.240 | 132.1 | 43.3 | 90.2 |

LC_CF0723
Column | Raptor HILIC-Si (cat.# 9310A52) | |||||||||
Dimensions: | 50 mm x 2.1 mm ID | |||||||||
Particle Size: | 2.7 µm | |||||||||
Pore Size: | 90 Å | |||||||||
Guard Column: | UltraShield UHPLC precolumn filter 0.2 µm (cat.# 25810) | |||||||||
Temp.: | 40 °C | |||||||||
Sample | ||||||||||
Diluent: | 20:80 Water:acetonitrile | |||||||||
Conc.: | Endogenous levels | |||||||||
Inj. Vol.: | 0.2 µL | |||||||||
Mobile Phase | ||||||||||
A: | 5 mM Ammonium formate in 20:80 water:acetonitrile | |||||||||
| ||||||||||
Detector | MS/MS | |||||||||
Ion Mode: | ESI+ | |||||||||
Mode: | MRM | |||||||||
Instrument | UHPLC | |||||||||
Notes | Sample Preparation: Endogenous levels of creatinine and creatine in human urine were determined using a simple dilute-and-shoot method. A 50 μL aliquot of human urine was mixed with 950 μL acetonitrile. After vortexing and centrifuging at 4,300 rpm for 10 min, 10 μL of the supernatant was added to the 1,490 μL of 80% acetonitrile in water. Centrifugation was performed again before injection. |
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