Purpose: To our knowledge, the normal fasting plasma glucose (FPG), blood pressure (BP), and blood lipids (BL) interval values have not been well-established in the longevity population. This study aims to provide a reference for the establishment of normal BP, FPG, and BL interval values in the longevity people in China.
Patients and Methods: A total of 7417 people were selected from the natural longevity cohort in Guangxi, with an age range of 20– 110 years old, including 7093 classified as the non-longevity (20– 89 years old) (94.02%) and 324 classified as the longevity (≥ 90 years old) (5.98%); there were 4309 men (58.1%) and 3108 women (41.9%). FPG, systolic blood pressure (SBP), diastolic blood pressure (DBP), total cholesterol (TC), and low-density lipoprotein (LDL-C) levels were defined as desirable levels when they were below the 75th percentile (P75), borderline levels from the 75th to 90th percentile (P75–P90), and high levels above P90; triglyceride (TG) levels above P90 were defined as high; and high-density lipoprotein cholesterol (HDL-C) levels below the 5th percentile (P5) were defined as low levels.
Results: The reference interval values of FPG in the longevity were as follows: desirable levels < 6.15 mmol/L, borderline levels 6.15– 7.45 mmol/L, high levels ≥ 7.45 mmol/L. Reference interval values of systolic blood pressure (SBP) were as follows: desirable levels < 160.00 mmHg, borderline levels 160.00– 174.50 mmHg, high levels ≥ 175.00 mmHg. DBP reference interval values were as follows: desirable levels < 88.00 mmHg, borderline levels 88.00– 90.00 mmHg, high levels ≥ 90.00 mmHg. TC reference interval values were as follows: desirable levels < 5.59 mmol/L, borderline levels 5.59– 6.45 mmol/L, high levels ≥ 6.45 mmol/L. LDL-C reference interval values were as follows: desirable levels < 3.30 mmol/L, borderline levels 3.30– 3.85 mmol/L, high levels ≥ 3.85 mmol/L. TG reference interval values were as follows: desirable levels < 2.82 mmol/L, high levels ≥ 2.82 mmol/L. HDL-C reference interval values were as follows: low levels < 0.80 mmol/L, desirable levels ≥ 0.80 mmol/L.
Conclusion: The reference interval values of BP, FPG, and BL are different between the longevity population and the non-longevity population, and the interval values change with increasing age.
Keywords: longevity, blood pressure, fasting plasma glucose, blood lipids, reference interval values