172 - Red Urine causes

 A. Conditions with positive dipstick test :

Hematuria
Haemoglobinuria - negative urinalysis
Myoglobinuria - negative urinalysis

B. Conditions with negative dipstick test :

Drugs - 1. Phenacetin
             2. Phenazopyridine
             3. Phenytoin
             4. Phenosuximide
             5. Phenothiazine
             6. Phenopthalein
             7. Aminosalicylic acid
             8. Anthraquinone derivatives
             9. Doxorubicin
            10. Rifampin
            11. Ibuprofen
            12. Methyldopa

Diet - 1. Beetroot 2. Berries 3. Maize 4. Rhodamine B

Dyes - 1. Azo dyes 2. Eosin

Metabolic - 1. Porphyrins 2. Red diaper syndrome ( serratia marcescens infection )