What Can Affect Blood Test Results?
How food, fasting, hydration, exercise, illness, medicines, supplements, timing and sample problems can affect blood test results.
Best GP practices in Harrow by Patient Experience (GPPS)
Best GP practices in Harrow, ranked using the latest available GP Patient Survey (GPPS) positive response results for “Overall experience (positive)”.
Updated using the latest GP Patient Survey publication available in this district (latest publish date: 2025-07-10).
Showing up to 12 best GP practices in Harrow ranked by GPPS “Overall experience (positive)”. Open a practice to view full details and survey cards.
Metric used:
Overall experience (positive)
•
Location:
Harrow
•
admin district
Scored practices
20
Matched GPPS values
Best score
95.9%
Positive responses
Average score
81.6%
Across scored practices
Latest published
2025-07-10
GPPS publish date
Best results
Ranked by GPPS positive response percentage (latest available survey for each practice).
Tip: open a practice to see full survey cards and details.
| # | Practice | Town | Postcode | Score | CI | Response rate | Responses |
|---|---|---|---|---|---|---|---|
| 1 |
Published: 2025-07-10
•
metric_key: overallexp
|
HARROW | HA3 9BN | 95.9% | 89%–98.5% | 13.8% | 95 / 688 |
| 2 |
Published: 2025-07-10
•
metric_key: overallexp
|
HARROW | HA1 4BS | 93.1% | 82.6%–97.5% | 22.4% | 97 / 434 |
| 3 |
Published: 2025-07-10
•
metric_key: overallexp
|
HARROW | HA1 3QE | 92.2% | 89%–94.6% | 30.7% | 142 / 463 |
| 4 |
Published: 2025-07-10
•
metric_key: overallexp
|
HARROW | HA2 0RQ | 88.2% | 56.9%–97.7% | 16.7% | 110 / 660 |
| 5 |
Published: 2025-07-10
•
metric_key: overallexp
|
HARROW | HA3 9BP | 86.3% | 74.7%–93.1% | 22.5% | 92 / 408 |
| 6 |
Published: 2025-07-10
•
metric_key: overallexp
|
STANMORE | HA7 1JP | 86.1% | 62.2%–95.9% | 18.5% | 102 / 551 |
| 7 |
Published: 2025-07-10
•
metric_key: overallexp
|
HARROW | HA3 5LE | 85.4% | 79.9%–89.7% | 18.1% | 106 / 586 |
| 8 |
Published: 2025-07-10
•
metric_key: overallexp
|
HARROW | HA2 6LY | 82.6% | 78.7%–85.9% | 18.1% | 111 / 612 |
| 9 |
Published: 2025-07-10
•
metric_key: overallexp
|
PINNER | HA5 4EA | 82.4% | 70.3%–90.3% | 32.9% | 116 / 353 |
| 10 |
Published: 2025-07-10
•
metric_key: overallexp
|
EDGWARE | HA8 5AT | 82.3% | 66.4%–91.6% | 21.4% | 93 / 434 |
| 11 |
Published: 2025-07-10
•
metric_key: overallexp
|
PINNER | HA5 4RD | 80.6% | 76%–84.5% | 31.3% | 103 / 329 |
| 12 |
Published: 2025-07-10
•
metric_key: overallexp
|
HARROW | HA1 2NU | 78.3% | 68.6%–85.6% | 27.2% | 134 / 492 |
Map of the best practices
Map points are shown for practices with coordinates available.
Near misses
Practices that nearly made the Best list (next best in this district).
| Practice | Town | Postcode | Score |
|---|---|---|---|
| HARROW | HA1 4QG | 76.9% | |
| HARROW | HA3 5HF | 76.8% | |
| HARROW | HA3 7LT | 76.7% | |
| HARROW | HA2 0AH | 76.3% | |
| HARROW | HA1 1PG | 74.2% | |
| HARROW | HA2 8RS | 73.6% | |
| HARROW | HA2 9LG | 73.1% | |
| HARROW | HA1 1SE | 70.6% |
GP patient survey resources & guides
Helpful guides about GP practices, patient experience, appointments and choosing local NHS services.
What Blood Tests Should Vegans and Vegetarians Consider?
Blood tests for vegans and vegetarians explained: learn when to check vitamin B12, iron, ferritin, vitamin D, thyroid and other nutritional markers.
What Blood Tests Should Women Have in Their 30s, 40s and 50s?
Women’s blood tests by age explained: learn when to check iron, thyroid, cholesterol, HbA1c, hormones, vitamins, fertility and menopause markers.
What Blood Tests Should Men Have in Their 30s, 40s and 50s?
Men’s blood tests by age explained: learn when to check cholesterol, HbA1c, liver, kidney, testosterone, PSA, vitamins and other key markers.
What Blood Tests Can Help Investigate Irregular Periods?
Irregular periods blood tests explained: learn when pregnancy, thyroid, prolactin, PCOS, hormone, ovarian function and iron tests may help.
Do You Need to Fast Before a Blood Test?
Blood test fasting explained: learn which tests require fasting, how long to fast, what you can drink, and whether medicines, coffee or exercise affect results.
Explore more
Browse other areas, or switch back to full GP listings.
Frequently asked questions
How is this “Best GP practices” list calculated?
We rank GP practices using the latest available GP Patient Survey (GPPS) value for “Overall experience (positive)”. Higher positive response percentages rank higher. We then show up to 12 practices for this district.
Why are some GP practices not included?
A practice needs a matched GPPS record and a valid value for the selected survey metric to appear in this ranking. Practices can still appear in the main directory even if they are not ranked here.
Is this an official NHS endorsement?
No. This is an independent view built from published survey data to help patients compare local practices more easily.
Healthcare sponsorship and content partnerships
Reach more than 2,000 daily readers
Put your healthcare business in front of an engaged UK audience through sponsored articles, category visibility, banner placements and expert author profiles.
Up to 2 articles per week
Up to 3 relevant links per article
Banner and top placements
Author or expert profiles
Category sponsorship from
£500
/ month
Sponsored articles from £50
View sponsorship optionsWe reply to every enquiry within 1 business day