Quick answer
The Blood Culture & Sensitivity Test costs ₹1,300 at Live Line Health Care. Checks whether bacteria or yeast are growing in the bloodstream, a key test in typhoid and sepsis that also guides the choice of antibiotic. No fasting is needed. It uses a blood sample and the report is usually ready within 2–5 days.
Also known as: Blood C/S, Blood CS, Blood Culture and Sensitivity, Blood Culture for Typhoid, Bacteraemia Test
What is the Blood Culture Test?
A Blood Culture & Sensitivity test checks whether bacteria or yeast have entered your bloodstream. Blood is normally sterile, so finding a germ there is serious. A sample is drawn with strict hygiene into culture bottles holding a nutrient broth, and these are kept warm in the lab for up to 5 days. If anything grows, the lab identifies it and tests which antibiotics can stop it. That lets your doctor move from a best guess to a targeted medicine.
In India, blood culture is often requested for long fevers because it is the most dependable routine way to confirm typhoid, especially in the first week of illness. That is where it differs from the Widal test, which only measures antibodies. It is also used when a doctor suspects sepsis, a heart valve infection, or an infection spreading from the kidneys, lungs or a wound. Antibiotics taken beforehand can stop the germ growing, so the sample should come first unless a doctor says otherwise. Anyone who looks seriously ill needs a hospital, not a home sample.
What it measures: Growth of bacteria or yeast from blood in culture bottles, the germ’s identity, and the antibiotics that act on it.
Parameters included (3)
- Growth of Bacteria or Yeast
- Organism Identified
- Antibiotic Sensitivity
Why is this test done?
- Long fever, when typhoid is suspected
- Fever with chills following a urinary, chest or wound infection
- Suspected sepsis, under a doctor’s care
- Suspected heart valve infection (endocarditis), where repeat sets are common
- Fever in people with low immunity, or after a procedure or catheter
- Fever that does not settle despite antibiotics
When should you get tested?
- Fever with shaking chills
- Fever lasting more than 5 to 7 days without a clear cause
- Fast heartbeat and fast breathing
- Extreme weakness or feeling faint
- Confusion or drowsiness during an infection
How to prepare for the Blood Culture Test
- 1Eating and drinking are fine before this test.
- 2The sample should ideally come before any antibiotic, unless your doctor has told you to start one. Tell the staff about doses already taken.
- 3Two sets from two separate veins are commonly advised, so more than one needle prick may be needed.
- 4The skin is cleaned carefully to avoid contamination, so please do not touch the area after it is disinfected.
- 5There is no need to wait for a temperature spike if your doctor wants the sample now.
Blood Culture Test normal range
| Parameter | Typical reference range |
|---|---|
| Expected result | No growth after 5 days of incubation |
| Early update | No growth so far, often at around 48 hours, with the final report to follow |
| Growth detected | Germ named, such as Salmonella Typhi, Staphylococcus aureus or Escherichia coli, with a sensitivity list |
| Possible contaminant | Skin germs in only one bottle may be contamination and may need a repeat sample |
Blood should be sterile, so this test has no numeric range. Any reported growth needs a doctor’s review the same day. Ranges are typical adult values and vary between labs, age and sex. Always use the range printed on your report and discuss results with your doctor.
Understanding your results
- Growth of a germ needs prompt medical attention. Contact your doctor the same day with the report.
- Skin bacteria such as coagulase-negative staphylococci are often contaminants, so your doctor considers how many bottles were positive and how you are feeling.
- No growth does not rule out infection. Earlier antibiotics, a small blood volume, or a germ that does not grow in culture can all give a negative report.
- The choice of antibiotic belongs to your doctor, who will use the sensitivity report to choose or change treatment.
- High fever with confusion, fast breathing, cold skin or very little urine may be sepsis. Go to emergency care at once, as treatment should not wait for a culture.
Blood Culture Test – FAQs
What is the price of the Blood Culture Test?
The Blood Culture & Sensitivity Test costs ₹1,300 at Live Line Health Care, at all 45 centres and for home sample collection.
How long does a blood culture report take?
A positive bottle often shows up within one to three days, and identifying the germ and testing antibiotics adds further time. A negative culture is usually held for 5 days before it is reported as final, so a longer wait is often a good sign.
Can a blood culture confirm typhoid?
Yes. Growing Salmonella Typhi or Paratyphi from blood confirms enteric fever and shows which antibiotics work. It is most likely to be positive in the first week of fever. A negative culture does not rule out typhoid, particularly after antibiotics.
What does no growth after 5 days mean?
It means no bacteria or yeast grew in the bottles during the full incubation period, which makes a bloodstream infection less likely. If fever continues, your doctor may repeat the test or look for other causes, including infections that do not grow in culture.
Why are two sets of blood culture bottles needed?
Germs may be present in small numbers, so more blood improves the chance of finding them. Samples from two different veins also help separate a true infection from skin germs that got in by accident during collection.
I have already started antibiotics. Is a blood culture still useful?
It can be, although the chance of growing a germ falls. Do not stop your medicine for the test unless your doctor asks you to. Tell the staff the name of the antibiotic and the time of your last dose.
What is a contaminated blood culture?
It means bacteria from the skin or the collection process got into the bottle, so the growth does not reflect an infection in your blood. It often appears in only one bottle. Your doctor may ask for a repeat sample to be sure.
Where can I get the Blood Culture Test done?
At any of our 45 Live Line Health Care centres in 40 cities across Andhra Pradesh and Telangana, including Hyderabad, Visakhapatnam, Warangal, Kakinada and Nellore, or book home sample collection.
Medical disclaimer: This information is for general awareness only and is not a substitute for professional medical advice. Please consult a qualified doctor to interpret your results and before starting or changing any treatment.