The broadest thing on the panel for the money, and the test most likely to find something nobody was looking for.
The hemograma completo counts and measures the three cell lines in blood, and at ₡13,000 it is the broadest thing on our baseline for the money. It runs on a haematology analyser in seconds, which is why a test that returns twenty‑odd numbers costs less than a single hormone.
It is also the test most likely to find something nobody was looking for.
Haemoglobin and haematocrit say how much oxygen‑carrying capacity you have. Low means anaemia — and anaemia produces exactly the symptoms that bring people to a longevity clinic in the first place: tiredness, breathlessness on the stairs, poor concentration, cold hands.
The useful detail is in the cell size, MCV:
So the haemogram does not just find anaemia, it tells you which direction to look — which is what makes the ₡18,000 ferritin a reasonable second step rather than a guess.
This is the quiet reason the haemogram belongs beside the metabolic markers. HbA1c depends on red cells living roughly three months. Anything that shortens or lengthens that changes the number without your blood sugar changing at all.
Iron deficiency tends to push HbA1c up. Haemolysis and recent blood loss push it down. Without a haemogram you would not know to read the HbA1c differently, and the two tests are drawn from the same sample.
Haematocrit is the proportion of blood made up of red cells — how thick it is. It matters here for one specific reason: testosterone treatment raises it, sometimes to a degree that requires the dose to be reduced or treatment stopped.
A baseline before starting is the only way to know later whether a rise is the treatment, and guidelines on testosterone therapy consistently require it. A clinic that prescribes testosterone without a haemogram is skipping a safety check, not a formality.
The total count and its differential — neutrophils, lymphocytes, monocytes, eosinophils, basophils — mostly reflect infection and inflammation. In a routine metabolic panel they are usually unremarkable, and that is the point: they are there to catch the uncommon thing.
A persistently abnormal white count is one of the few findings on a wellness panel that needs following up promptly rather than at the next visit.
Platelets clot. A low count raises bleeding risk; a high one can reflect inflammation, iron deficiency or, less often, a bone marrow disorder.
There is also a quieter use: a low platelet count alongside a raised ALT can be an early hint of liver scarring, and in a population where fatty liver is common that combination is worth noticing. Neither number alone would prompt it.
It does not measure iron stores — that is ferritin. It does not measure B12. It does not assess clotting function, only the platelet count. And a normal haemogram does not exclude much on its own; it simply makes several things less likely.
One practical point: results are affected by dehydration, which concentrates the blood and raises haemoglobin and haematocrit. Arriving properly hydrated matters more for this test than for most.
Three reasons, in order of how often they matter: it finds anaemia, which explains the presenting symptom surprisingly often; it tells you whether the HbA1c beside it can be trusted; and it provides the haematocrit baseline that any future hormone treatment requires. For ₡13,000 that is the best value on the panel.
A haemogram is a screen, and screens produce findings that need context. A single mildly abnormal value on a twenty‑line report is common and usually unimportant — which of them matters, and which needs repeating, is a judgement for a physician reading the whole thing.
Every patient starts the same way: thirty minutes with a physician, then a full biomarker panel drawn at a laboratory near you. Whether any medicine follows is your doctor’s decision, made after reading your results with you.
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