Health Library
Understand your tests before you take them
Plain-language guides from the team at Charak Diagnostic Centre, Chowk — what a test actually measures, how to prepare for it, and when it is worth doing at all.
For Lucknow
Questions with a place in them — where to go, what the season brings, and what to expect at the centre.
Blood tests
Blood tests for children in Lucknow: making it easier, and what is worth doing
Half the difficulty of a child's blood test is the fear around it. What helps, and which tests are actually worth doing.
· 5 min read
Blood tests
Allergy testing in Lucknow: what it can tell you, and what it cannot
A positive allergy test does not mean you are allergic. What testing is genuinely for, and why broad panels cause more confusion than they solve.
· 5 min read
Blood tests
Uric acid and joint pain in Lucknow: when it is gout and when it is not
A raised uric acid on a routine panel is common and usually not gout. Which joint pain actually points to it, and what else to check.
· 5 min read
Blood tests
Kidney function test in Lucknow: creatinine, eGFR and the test everyone skips
Kidneys fail quietly. By the time creatinine rises, a lot of function is already gone — which is why the urine test matters.
· 6 min read
Blood tests
Liver function test in Lucknow: fatty liver, and reading an LFT report
Raised enzymes on a routine panel are common and rarely explained properly. Here is what each line means, and what usually causes it.
· 6 min read
Blood tests
Anaemia in Lucknow: why haemoglobin alone is not the whole answer
A low haemoglobin is the start of the question, not the answer. The cause decides the treatment, and iron is not always it.
· 6 min read
Blood tests
Home blood sample collection in Lucknow: how it works and what to check
Convenient, and only as good as the handling. What a proper home collection looks like, and what to check before you agree to one.
· 5 min read
Blood tests
Vitamin D deficiency in Lucknow: why so many reports come back low
Plenty of sun and still deficient — it is one of the most common abnormal results we see. Here is why, and what the number on your report means.
· 6 min read
Understanding your tests
General health education — as true anywhere in India as it is here.
Blood tests
The urine routine test: the cheapest test on your report, and one of the most useful
It costs almost nothing and picks up kidney disease, diabetes and infection. What each line on the report means.
· 5 min read
Blood tests
Vitamin B12 deficiency: why it is common in India, and why it is missed
Common, easily corrected, and frequently missed until the damage is done. Who is at risk, and what to look for.
· 6 min read
Blood tests
CRP and ESR: what inflammatory markers can and cannot tell you
Both say inflammation is present. Neither says where or why — which is the single most useful thing to understand about them.
· 5 min read
Blood tests
Fasting before a blood test: which tests need it, and which don't
Some tests genuinely need an empty stomach; many don't. Fasting when you don't need to is unpleasant — not fasting when you do can make the result misleading. Here's the actual list.
· 5 min read
Blood tests
Understanding your CBC report: what the numbers actually mean
The CBC is the most commonly ordered blood test there is — and the report can look like a wall of numbers. Here is what each line is measuring, in plain language.
· 6 min read