The question "How much RFT is normal?" is ambiguous. RFT can refer to either Renal Function Tests (RFT) or Run-Flat Tires (RFT). Therefore, we'll address both interpretations separately.
1. Renal Function Test (RFT) Normal Ranges
A renal function test (RFT) measures how well your kidneys are working. Normal ranges for RFT vary depending on factors like age, sex, and laboratory methods. However, typical ranges include:
- Blood Urea (BUN): 6 - 20 mg/dL
- Creatinine: 0.72 - 1.25 mg/dL (Note: Some sources specify different ranges based on gender. For example, one source gives 0.7 - 1.3 mg/dL for men and 0.6 - 1.1 mg/dL for women.)
- Blood Urea Nitrogen (BUN)/Creatinine Ratio: 5.5 - 19.2 %
Important Note: These are example ranges, and your doctor will interpret your results considering your individual health history. Always consult a medical professional for clarification on your specific RFT results.
2. Run-Flat Tires (RFT) – What is Considered Normal?
Run-flat tires (RFT) are designed to be driven even when deflated. There's no single "normal" amount of deflation for RFTs; the tires are designed to handle some loss of pressure. However, driving on significantly deflated RFTs is damaging to the tire and can negatively impact vehicle handling. Therefore, it is not normal or advisable to drive on significantly deflated RFTs. Regular tire pressure monitoring and maintenance are crucial.
Important Note: Even with RFTs, it's essential to check tire pressure regularly and replace them when necessary. Driving on severely damaged or low-pressure RFTs can still cause handling issues and damage to the vehicle.
