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Reference Range SI Reference Intervals
Endocrine:
Follicle-stimulating hormone Male: 4–25 mIU/mL 4–25 IU/L
Female: premenopause 4–30 mIU/mL 4–30 IU/L
midcycle peak 10–90 mIU/mL 10–90 IU/L
postmenopause 40–250 mIU/mL 40–250 IU/L
Luteinizing hormone Male: 6–23 mIU/mL 6–23 IU/L
Female: follicular phase 5–30 mIU/mL 5–30 IU/L
midcycle 75–150 mIU/mL 75–150 IU/L
postmenopause 30–200 mIU/mL 30–200 IU/L
Growth hormone - arginine stimulation Fasting: <5 ng/mL <5 μg/L
Provocative stimuli: >7 ng/mL >7 μg/L
Prolactin (hPRL) Male: <17 ng/mL <17 μg/L
Female: <25 ng/mL <25 μg/L
Cortisol 0800 h: 5–23 μg/dL 138–635 nmol/L
1600 h: 3–15 μg/dL 82–413 nmol/L
2000 h: <50% of 0800 h Fraction of 0800 h: <0.50
TSH 0.4–4.0 μU/mL 0.4–4.0 mIU/L
Triiodothyronine (T
3
) (RIA) 100–200 ng/dL 1.5–3.1 nmol/L
Triiodothyronine (T
3
) resin uptake 25%–35% 0.25–0.35
Thyroxine (T
4
) 5–12 μg/dL 64–155 nmol/L
Free T
4
0.9–1.7 ng/dL 12.0–21.9 pmol/L
Thyroidal iodine (
123
I) uptake 8%–30% of administered dose/24 h 0.08–0.30/24 h
Intact PTH 10–60 pg/mL 10–60 ng/L
17-Hydroxycorticosteroids Male: 3.0–10.0 mg/24 h 8.2–27.6 μmol/24 h
Female: 2.0–8.0 mg/24 h 5.5–22.0 μmol/24 h
17-Ketosteroids, total Male: 8–20 mg/24 h 28–70 μmol/24 h
Female: 6–15 mg/24 h 21–52 μmol/24 h
Immunoglobulins:
IgA 76–390 mg/dL 0.76–3.90 g/L
IgE 0–380 IU/mL 0–380 kIU/L
IgG 650–1500 mg/dL 6.5–15.0 g/L
IgM 50–300 mg/dL 0.5–3.0 g/L
Other, serum:
Creatinine clearance Male: 97–137 mL/min 97–137 mL/min
Female: 88–128 mL/min 88–128 mL/min
Creatine kinase Male: 25–90 U/L 25–90 U/L
Female: 10–70 U/L 10–70 U/L
Lactate dehydrogenase 45–200 U/L 45–200 U/L
Osmolality 275–295 mOsmol/kg H
2
O 275–295 mOsmol/kg H
2
O
Uric acid 3.0–8.2 mg/dL 0.18–0.48 mmol/L
GASES, ARTERIAL BLOOD (ROOM AIR)
PO
2
75–105 mm Hg 10.0–14.0 kPa
PCO
2
33–45 mm Hg 4.4–5.9 kPa
pH 7.35–7.45 [H
+
] 36–44 nmol/L
CEREBROSPINAL FLUID
Cell count 0–5/mm
3
0–5 × 10
6
/L
Chloride 118–132 mEq/L 118–132 mmol/L
Gamma globulin 3%–12% total proteins 0.03–0.12
Glucose 40–70 mg/dL 2.2–3.9 mmol/L
Pressure 70–180 mm H
2
O 70–180 mm H
2
O
Proteins, total <40 mg/dL <0.40 g/L
Laboratory Values (continued)