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Diagnostics 5 min read2026-07-18

Understanding your lab results: a plain-language guide

Laboratory Team, Gilgil Annex Hospital

Published 2026-07-18

Medically reviewed by Laboratory Team, Gilgil Annex Hospital on 2026-07-18

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Clinic room at Gilgil Annex Hospital
Photograph: Gilgil Annex Hospital

Key takeaways

  • Lab values are interpreted in context — one number rarely tells the whole story.
  • Reference ranges show what's typical for most people, not your personal target.
  • Always review results with a clinician before drawing conclusions.

A lab report can look like a wall of abbreviations and numbers. But behind the jargon, it's telling a story about how your body is working. Here's a friendly tour of the most common tests — and why context matters more than any single number.

The complete blood count (CBC)

Haemoglobin carries oxygen in your blood; low levels suggest anaemia — a common cause of fatigue. White blood cells reflect your immune activity, rising during infection. Platelets help your blood clot. Together, these three lines give clinicians a quick map of your blood health.

Blood glucose and HbA1c

A glucose test shows your blood sugar at one moment; HbA1c shows your average over roughly three months. That's why HbA1c is the preferred test for monitoring diabetes — it smooths out the daily ups and downs.

  • Fasting glucose: measured after 8 hours without food
  • HbA1c: reflects long-term sugar control
  • Kidney function (creatinine, urea): how well your kidneys filter
  • Liver enzymes (ALT, AST): clues about liver health

“A reference range describes most people. Your clinician decides what's right for you.”

Why 'normal' isn't the whole answer

Every report includes reference ranges — the values found in most healthy people. But your age, pregnancy, medication, and medical history all shape what's meaningful for you. A result just outside the range isn't automatically alarming, and a result inside it isn't automatically reassuring. The interpretation is where clinical experience matters most.

At our laboratory, results are reviewed alongside your consultation — and we'll always explain what they mean in language you can actually use. If something needs watching, you'll know the plan before you leave.

Concerned about something you read here?

Articles are general guidance — they can't replace a consultation. If something resonated with you, let's talk about it properly.

Where we treat this

This article is written by our team at Gilgil Annex Hospital. The departments below handle this kind of care.

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