Baby Gender Blood Test - Early Gender DNA Testing
Compare providers offering early gender blood tests and find out your babys gender from as early as 7 weeks.
About Gender Blood Tests
Gender blood tests (also known as fetal sex determination) analyze cell-free fetal DNA in the mothers blood to determine your babys gender. These tests:
- Can detect gender from 6-7 weeks
- 99%+ accuracy rates
- Home kits or clinic options
- Results in 2-7 days
Gender Blood Test Providers
| Provider | Earliest Test | Accuracy | Price ↑ | Sample Method | Turnaround | Additional Info |
|---|---|---|---|---|---|---|
| AffinityDNA Baby Gender Test | 7 weeks | 99.5% | £89.00 | Venous blood draw (clinic) | 7 days | Requires nurse-collected sample; Money-back guarantee; Not validated for twins |
| UK Meds (Goodbody Clinics) | 6 weeks | 99.9% | £99.00 | Venous blood draw (clinic) | 3 days | Recommends waiting until 8-10 weeks for higher BMI patients |
| SneakPeek At-Home | 6 weeks | 99% | £129.00 | Finger-prick blood (home) | 7 days | Risk of male DNA contamination; 1-year kit validity |
| Baby Bump UK (SneakPeek Clinical) | 6 weeks | 99.9% | £129.00 | Venous blood draw (clinic) | 4 days | Certified phlebotomists; Gender reveal packaging available |
| GenderDX Prenatal Test | 7 weeks | 99% | £199.00 | TAP device (home) | 2 days | No clinic visit required; Painless microfluidics collection |
| Numi Scan East London | 8 weeks | 99.9% | £229.00 | Venous blood draw (clinic) | 7 days | Uses Next Generation Sequencing; Express 4-day service (+£75) |
| Window to the Womb firstPeek | 7 weeks | 99% | £250.00 | Venous blood draw (clinic) | 7 days | Requires ultrasound confirmation of dates; CQC-regulated clinics |
7 weeks
99.5%
Venous blood draw (clinic)
7 days
Requires nurse-collected sample; Money-back guarantee; Not validated for twins
6 weeks
99.9%
Venous blood draw (clinic)
3 days
Recommends waiting until 8-10 weeks for higher BMI patients
6 weeks
99%
Finger-prick blood (home)
7 days
Risk of male DNA contamination; 1-year kit validity
6 weeks
99.9%
Venous blood draw (clinic)
4 days
Certified phlebotomists; Gender reveal packaging available
7 weeks
99%
TAP device (home)
2 days
No clinic visit required; Painless microfluidics collection
8 weeks
99.9%
Venous blood draw (clinic)
7 days
Uses Next Generation Sequencing; Express 4-day service (+£75)
7 weeks
99%
Venous blood draw (clinic)
7 days
Requires ultrasound confirmation of dates; CQC-regulated clinics
Testing Information
The Testing Process
Key Benefits
- Results typically available in 2-7 working days
- Non-invasive test using maternal blood sample
- Earlier than traditional 20-week ultrasound
- Choice of home testing kits or clinic visits
- No risk to mother or baby
Accuracy and Timing
Understanding when you can test and expected accuracy rates:
- 6-7 weeks: Earliest possible testing time (95-99% accuracy depending on provider)
- 8+ weeks: Optimal testing time with highest accuracy rates (99%+)
- Twin pregnancies may require specialist interpretation
- Previous pregnancies do not affect test accuracy
Frequently Asked Questions
How does the test work?
The test analyzes cell-free fetal DNA present in the mothers blood to detect Y chromosome material, which indicates a male fetus. Absence of Y chromosome indicates a female.
Is the test safe?
Yes, the test is completely safe as it only requires a blood sample from the mother. There is no risk to the baby or the pregnancy.
What if I am having twins?
For twin pregnancies, the test can detect if at least one baby is male. For definitive gender determination of both twins, additional testing or interpretation may be needed.
How accurate are home testing kits?
Home testing kits are generally very accurate when used correctly, but it is crucial to follow the instructions carefully to avoid contamination with male DNA from handling.