Near‐infrared spectrophotometry

was associated with a combination of nine wavelengths. The amount of glucose (mmol/L) in a sample was calcu-sorbance spectra may further improve the results (1). Hall and Pollard (1) showed that fluoride/oxalate anticoag-To the Editor: lated with the following algorithm: ulant interferes with the measure-Hall and Pollard (1) recently reviewed the application of near-infra-red spectrometry (NIRS) in Chiucal chemistry. NIRS has been applied to measuring cholesterol, total protein, albumin, triglycerides, and glucose in serum. Here, preliminary evidence is Glucose = F0 + Flog(1/R) ment of serum glucose by NIRS. Similarly , preservatives (which were absent in the urine samples analyzed in the present study) and drugs may interfere with urine glucose analysis by NIRS, and should be the focus of further studies. analysis of glucose in urine, and 1680 nm, respectively. The F-val-References Urine samples were selected from samples that were submitted for rou-ues for bias F0 and these nine wavelengths were 410, 41 692,-57 533, 1. Hall JW, Pollard A. Near-infrared spec-ti-ophotometry: a new dimension in clinical tine glucose analysis, collected without preservative. Urine glucose was determined with an EPOS analyzer by the hexokinase method (Gluco-quant;