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Hemoglobin A1c (HbA1c) with 24-hour urine collection for albumin-to-creatinine ratio (UACR) analysis

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

This test measures your long-term blood sugar control and checks for kidney function by analyzing albumin and creatinine in your urine over 24 hours.

Quick summary

["Helps track diabetes management and kidney health in one combined assessment."]

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

Key facts at a glance

LOINC
4626-8
Short code
Hgb Yakima Bld Ql
Synonyms
Hgb Yakima Bld Ql
Category
hematology
Sample
whole-blood
Container
Lavender-top (EDTA)
Units
N/A
Ref low
12
Ref high
17.5
Critical range
7 N/A – 20 N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
CPT
85018
SNOMED
900000000000003004
Specimen volume
3 mL
Stability
Room temperature: 4h, Refrigerated: 24h
Hemolysis max
0
Lipemia max
0
Icterus max
0
TAT
4–24 hours
Order
routine

Why HbA1c Matters for Blood Sugar Control

HbA1c reflects your average blood sugar levels over the past 2–3 months, providing insight into how well your diabetes or prediabetes is managed. Lower values suggest better control, while higher values indicate periods of elevated blood sugar.

How the Urine Test Assesses Kidney Health

The 24-hour urine albumin-to-creatinine ratio (UACR) checks for kidney damage by comparing small protein (albumin) levels to creatinine in your urine. Persistent high UACR may signal kidney strain, especially in people with diabetes.

What Normal Results Typically Indicate

A normal HbA1c (typically below 5.7%) suggests good blood sugar management, while a UACR below 30 mg/g is usually within healthy kidney range. However, individual ranges depend on your overall health and diabetes status.

When This Test Might Be Ordered

Your doctor may recommend this test if you have diabetes, prediabetes, or symptoms like frequent urination, swelling, or high blood pressure that could affect kidney function.

Reference range

Adult males: 13.5-17.5 g/dL; Females: 12.0-16.0 g/dLN/A

Specimen: whole-blood

No special preparation usually required. Stay well hydrated. Inform your healthcare provider of all medications and supplements you are taking.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

HbA1c + UACR profile

Frequently asked questions

What does an abnormal HbA1c result mean?
An elevated HbA1c (typically above 6.5%) suggests poor blood sugar control and may require lifestyle changes, medication adjustments, or closer monitoring. Your doctor will discuss next steps based on your specific results.
Why does my doctor need both HbA1c and UACR?
Together, these tests provide a fuller picture: HbA1c shows diabetes management, while UACR assesses kidney strain. This dual approach helps detect complications early and tailor treatment to protect both blood sugar and kidney health.
Can I fast before this test?
No fasting is required for HbA1c, but the 24-hour urine collection must be complete. Follow your lab’s instructions carefully to ensure accurate results, such as collecting all urine in a timed container and keeping it refrigerated.
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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