Skip to content

Fifth Finger Length Measurement (Usual Length)

Published: August 9, 2026Updated: August 16, 2026

This test measures the length of your fifth finger (little finger) as part of a physical examination to assess overall growth or developmental patterns.

Quick summary

["Your fifth finger length may help doctors check for growth concerns or genetic conditions."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
53701-9
Short code
Fet Finger.5th-L Length US.meas
Synonyms
Fet Finger.5th-L Length US.meas
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
us-measured
Specimen volume
5 mL
Stability
Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
Hemolysis max
500
Lipemia max
1000
Icterus max
500
TAT
4–24 hours
Order
routine

Why Is This Test Done?

Healthcare providers may measure finger length during routine check-ups, especially in children, to monitor growth trends or identify potential developmental issues. It can also be part of a broader evaluation for genetic syndromes or congenital conditions.

How Is It Performed?

No special preparation is needed. A healthcare professional will gently measure the length of your fifth finger using a ruler or measuring tool, often while you are lying down or sitting comfortably.

What Does the Result Mean?

Results are typically compared to standard growth charts or reference ranges for age and gender. Significant deviations from expected measurements may warrant further evaluation by a healthcare provider.

What Are Possible Causes?

While finger length alone is not diagnostic of a specific condition, it may be part of a broader assessment for genetic disorders, hormonal imbalances, or growth-related concerns. Persistently abnormal measurements could prompt additional testing or consultations.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Fifth Finger Length

Frequently asked questions

How often will I need this test?
This test is usually done as part of a routine physical exam or during specific evaluations, such as prenatal care, pediatric check-ups, or genetic counseling. Frequency depends on your medical history and healthcare provider’s recommendations.
Is there any risk or discomfort involved?
No discomfort is expected. The measurement is quick and painless, involving only a simple measurement of your finger length.
Can I prepare for this test?
No special preparation is required. Wear comfortable clothing and bring any relevant medical records or concerns to discuss with your healthcare provider.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.

This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy