Lab Values 2026

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Last updated 1:34 AM on 9/13/26
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44 Terms

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Normal sodium (Na+)

135 ‐ 145 mEq/L

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Hyponatremia

Na+ values <135 mEq/L

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Hypernatremia

Na+ values >145 mEq/L

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Normal potassium (K+)

3.5 ‐ 5.0 mEq/L

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Normal serum calcium (Ca)

9 ‐ 10.5 mg/dL

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Normal magnesium (Mg)

1.3 ‐ 2.1 mEq/L

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Low potassium

hypokalemia

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High potassium

hyperkalemia

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Normal phosphorus (P)

3.‐ 4.5 mg/dL

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High phosphorus

hyperphosphatemia

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Low phosphorus

hypophosphatemia

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Normal chloride (Cl-)

101 ‐ 111 mEq/L

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High chloride

hyperchloremia

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Low chloride

hypochloremia

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Normal bicarbonate (HCO3-)

22 ‐ 28 mEq/L

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Normal pH

7.35-7.45

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Normal PO2

≥80 mmHg

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Normal PCO2

34-45 mmHg

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Normal serum ferritin

Men 12‐300 ng/mL and women 10‐150 ng/mL

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Normal serum iron

Men 80‐180 mcg/dL and women 60‐160 mcg/dL

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Normal total iron-binding capacity (TIBC)

250‐460 mcg/dL

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Normal transferrin saturation

Men 20‐50% and women 15‐50%

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Normal hemoglobin (Hgb)

Men 14‐18 g/dL and women 12‐16 g/dL

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Normal red blood cells (RBC) level

Men 4.7- 6.1 million cells/mcL and women 4.2 - 5.4 million cells/mcL

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Normal hematocrit (Hct) levels

Men 42‐52% and women 37‐47%

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Desirable total cholesterol

<200 mg/dL

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Desirable LDL-C levels

<100 mg/dL

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HDL-C

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Normal triglycerides level

<150 mg/dL is normal (200‐499 mg/dL is high)

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Normal fasting plasma glucose

70-99 mg/dL

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Pre-diabetes fasting plasma glucose

100-125 mg/dL

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Diabetes fasting plasma glucose

≥ 126 mg/dL

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Normal HbA1c (%)

4.0-5.6%

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Pre-diabetes HbA1c (%) for diagnosis

5.7-6.4%

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Diabetes HbA1c (%) for diagnosis

≥ 6.5%

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Glycemic control labs

-A1C < 7.0%

-Preprandial capillary plasma glucose 80- 130 mg/dL

-Peak postprandial capillary plasma glucose

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Normal serum albumin

3.5-5.0 g/dL

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Normal transferrin

250-380 mg/dL (females) and 215-365 mg/dL (males)

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Normal prealbumin

16-35 mg/dL

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Normal retinol-binding protein

2.1-6.4 mg/dL

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Normal BUN

5‐20 mg/dL

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Normal serum creatinine

0.6‐1.2 mg/dL

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C-reactive protein (CRP)

<1.0 mg/dL

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Glomerular Filtration Rate (GFR)

○ Normal range/ Stage 1 CKD: 90 or higher

○ Stage 2 CKD: 89-60

○ Stage 3a CKD: 59-45

○ Stage 3b CKD: 44-30

○ Stage 4 CKD: 29-15

○ Stage 5/ ESRD: less than 15