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Lab Tests Beginning With H
6 tests in the Lab Values reference begin with the letter H. Every name links to a page with its typical adult range in both unit systems, plain-language notes on high and low results, and preparation notes where they apply.
A B C D E F G H I L M N NUMBERS O P R S T U V W Z
| Test | Abbr. | Typical range (conventional) | Typical range (SI) |
|---|---|---|---|
| Haptoglobin | — | 30–200 mg/dL | 0.3–2.0 g/L |
| HDL Cholesterol | HDL-C | Male ≥40; Female ≥50 mg/dL | Male ≥1.03; Female ≥1.29 mmol/L |
| Hematocrit | Hct | Male 41–50; Female 36–48 % | Male 0.41–0.50; Female 0.36–0.48 L/L |
| Hemoglobin | Hb | Male 13.5–17.5; Female 12.0–15.5 g/dL | Male 135–175; Female 120–155 g/L |
| Hemoglobin A1c | HbA1c | 4.0–5.6 % | 20–38 mmol/mol |
| Homocysteine | — | 5–15 µmol/L | 5–15 µmol/L |
Please note: Reference ranges vary between laboratories, and between the methods and instruments they use — the range printed on your own report is the one your result should be compared with. A result outside the range is not by itself a diagnosis, and a result inside it does not rule out illness. These pages are an educational summary, not medical advice: always discuss your results with the clinician who ordered them, who can interpret them in the context of your health and history.