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urine color

Reference interval: - pale yellow to deep amber, light yellow to pale amber [4] Clinical significance: - normal color is imparted by urochrome, depending upon how concentrated the urine is - dilute urine is light yellow - maximally concentrated urine is deep amber - deep purple urine: - porphyria - purple urine bag syndrome - bag or catheter not urine that is purple - Providencia & Klebsiella species produce indoxyl phosphatase that stains synthetic material in urine bags & catheters [4] - E coli, Enterococcus, Morganella, Proteus, Pseudomonas species also produce indoxyl phosphatase - occurs in elderly with long-term indwelling urinary catheters - red urine may indicate hematuria (light pink to dark port wine color) - tea-to-red-brown color urine may be due to myoglobinuria [2] - brown urine may be due to bilirubinuria [2] - red-brown urine may be intermediate between light yellow & deep amber - green urine: propofol, methylene blue - orange urine: phenazopyridine - black urine: paraphenylenediamine

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urine

Specific

red urine

General

urine chemistry test

References

  1. MedlinePlus: Urine Abnormal color http://www.nlm.nih.gov/medlineplus/ency/article/003139.htm
  2. Images for amber urine https://www.google.com/search?q=amber+urine&tbm=isch&tbo=u&source=univ&sa=X&ei=3PwAVJS1Foja8AH5qoG4Ag&ved=0CDwQsAQ&biw=1101&bih=711
  3. Panel of 22 tests Laboratory Test Directory ARUP: 20350
  4. Palka J, Atalla CS. 12 Causes of Discolored Urine. Medscape. Nov 15, 2017 9 Causes of Discolored Urine. Medscape. Dec 20, 2022 https://reference.medscape.com/slideshow/discolored-urine-6008332

Component-of

urinalysis (UA)