Skip to content

Hemoglobin A1c (HbA1c) with 24-hour urine collection for protein excretion (microalbuminuria screening)

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

This test measures your blood sugar levels over the past 2–3 months and checks for small amounts of protein in your urine, which may indicate kidney issues.

Quick summary

["Helps monitor diabetes and kidney health by tracking blood sugar and early kidney damage signs."]

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

Key facts at a glance

LOINC
49375-9
Short code
HCV RNA Tiss NAA+probe-Log#
Synonyms
HCV RNA Tiss NAA+probe-Log#
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
probe-amp-tar
CPT
86803
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 This Test Matters for Blood Sugar Control

HbA1c reflects your average blood glucose levels over time, helping doctors assess how well your diabetes is managed. A consistently high HbA1c may signal poor control, while low values may indicate effective treatment.

Checking for Kidney Problems Early

Microalbuminuria in urine can signal early kidney damage, even when blood tests show no other signs. This test helps detect kidney strain from diabetes before it worsens.

How the Test Works

Your blood is drawn for HbA1c, while a 24-hour urine sample collects protein. The lab analyzes both to check for elevated sugar levels and protein presence.

What to Expect Before the Test

No special prep is needed for HbA1c, but for urine protein, collect all urine over 24 hours (including midnight). Drink extra water to help urine flow.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

High HbA1c (>7%) often indicates uncontrolled diabetes, increasing heart/kidney risks. Microalbuminuria (protein in urine) may signal early kidney damage, especially in diabetics, and can guide treatment adjustments.

Short name

HbA1c + Microalbuminuria 24h

Frequently asked questions

What does an abnormal HbA1c result mean?
An elevated HbA1c suggests your blood sugar has been consistently high, which may require adjustments to diet, medication, or lifestyle.
Will I need to change my diabetes management if my results are abnormal?
Yes, your doctor may recommend closer monitoring, medication changes, or additional tests to prevent complications like kidney damage or nerve issues.
Can I drink coffee or alcohol before the urine test?
Avoid alcohol before urine collection, but coffee is fine unless your doctor advises otherwise. Drink plenty of water to dilute urine properly.
  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