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Sputum for Routine Culture
116.00
The Sputum for Routine Culture test identifies bacteria causing lower respiratory tract infections. It helps guide targeted antibiotic treatment based on laboratory results.
Turnaround time
Results available 2-4 days after arrival in lab. Doctor's report sent the day after results available (if required)
Biomarkers count
1
Same-Day Appointments
UKAS Accredited Labs
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Under 18? Patients under 18 can only be seen at GB Medlabs and Clinilabs, Monday to Friday only.
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Details about Sputum for Routine Culture
What is the Sputum for Routine Culture test?
The Sputum for Routine Culture test is a laboratory analysis of mucus (sputum) produced from the lower airways and lungs. Unlike saliva, sputum contains material from the bronchial tree and lungs, making it suitable for identifying bacterial respiratory infections.
The sample is cultured in the laboratory to allow bacteria to grow and be identified. Where appropriate, antibiotic sensitivity testing is performed to determine which antibiotics are most effective against the detected organism.
Why do I need a Sputum for Routine Culture test?
Respiratory infections can present with similar symptoms but require different treatments. A sputum culture helps distinguish bacterial infection from viral or non-infectious causes and supports accurate treatment decisions.
You may need this test if you have:
- Persistent or productive cough
- Thick, discoloured, or foul-smelling sputum
- Suspected pneumonia or bronchitis
- Worsening respiratory symptoms despite treatment
- Chronic lung conditions (e.g. COPD, bronchiectasis)
- Recurrent chest infections
- Fever and chest discomfort with mucus production
Benefits of the Sputum for Routine Culture test
- Identifies bacterial lung infections
Detects the causative organism. - Guides targeted antibiotic therapy
Reduces unnecessary or ineffective treatment. - Supports diagnosis of chronic infections
Useful in recurrent or persistent symptoms. - Helps monitor treatment response
Repeat testing can assess clearance. - Non-invasive sample collection
No blood draw required. - Improves antimicrobial stewardship
Helps reduce antibiotic resistance. - Useful in underlying lung disease
Important for COPD or bronchiectasis management. - Provides clear clinical direction
Supports GP or specialist decision-making.
Step-by-step – How we offer this test
Option 1: Clinic-based sample submission (UK-wide)
- Choose your nearest UK clinic
- Receive instructions on sputum collection
- Provide sputum sample
- Sample sent for laboratory culture
Option 2: Home sample collection (UK-wide)
- Home collection kit provided
- Collect sputum sample following instructions
- Return sample to the laboratory
- Identical processing and reporting
Your results explained
No bacterial growth
No significant bacteria detected.
Typical UK interpretation:
- Normal respiratory flora or no growth
This suggests symptoms may be viral or non-infectious.
Positive bacterial growth
A bacterial pathogen is identified.
Typical UK interpretation:
- Pathogenic organism detected
Antibiotic sensitivity testing may guide treatment choice.
Mixed growth or contamination
Sample may contain upper airway flora.
Typical UK interpretation:
- Mixed organisms present
Repeat sampling may be recommended for clarity.
How It Works
Simple steps to get your results
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Book Online
Choose your test online and book in seconds. Select your preferred clinic location or home visit option.
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Visit or Test at Home
Attend one of our UK or London clinics, arrange a home nurse visit, or use a finger-prick kit where available.
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Get Your Results
Your sample is analysed by accredited UK laboratories, with secure results delivered directly to you.
Take control of your health with London Blood Tests
WhatsApp UsHow to Prepare for Your Test
Follow these guidelines for accurate results
Sample Timing
Where possible, attend your blood test between 7am and 12pm. Please wait until any short-term illness or infection has fully resolved before testing. Avoid intense exercise for 24–48 hours beforehand, as this can affect certain markers.
Fasting & Hydration
Fasting is not always required, but some tests may recommend it. If fasting is advised, avoid food for 8–12 hours before your appointment and drink water only. Stay well hydrated, as this helps with sample collection and accuracy.
Medications & Supplements
Continue prescribed medications unless advised otherwise by your clinician. Avoid vitamin, mineral, or biotin supplements for at least 24–48 hours before your test, as these can interfere with results. If you are unsure about any medication or supplement, please let us know before your appointment.
Hormones & Menstrual Cycle
For hormone-related tests, timing within your menstrual cycle may be important. If relevant, follow any specific guidance provided on your test page.
If you have any questions or special circumstances, our team is happy to advise before your appointment.
Frequently Asked Questions
No. Sputum comes from the lungs; saliva comes from the mouth.
Yes. Early morning sputum is usually best.
No. Fasting is not required.
Yes. Antibiotics may reduce bacterial growth.
Usually 2–5 working days, depending on growth.
No. TB requires a specific mycobacterial test.
Yes, if a sputum sample can be produced.
Yes, to assess response or clearance.
Alternative respiratory samples may be advised.
Yes. Clinic-based and home sample options are available across the UK.
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