The changing of the seasons and the temperature shifts that come with it can impact your hydration levels, energy, and circulation. These are all factors that determine whether your plasma donation experience goes smoothly.
Knowing how to prepare for donating plasma throughout the year helps you pass the health screening, feel comfortable during your appointment, and recover faster afterward.
How the Seasons Affect the Body and Your Plasma Donation
Your body naturally responds to the changing elements, but seasonal extremes can sometimes catch your circulation off guard. From summer dehydration to winter vascular constriction, the weather directly influences your physical comfort and your speed when you donate plasma.
Summer: Dehydration and Blood Volume
Calexico sits in the Imperial Valley’s Sonoran Desert, where humidity drops to 26% and annual rainfall averages only 3.36 inches during the hotter months. In this kind of weather, your body loses fluids rapidly through sweat. And because plasma is roughly 90% water, this fluid loss impacts your blood volume.
When you are dehydrated, your blood becomes thicker, which can cause your blood pressure to drop and your veins to constrict. For a plasma donor, this often leads to a slower donation process. It can also increase the risk of minor, uncomfortable reactions like dizziness, nausea, or fainting during or after the procedure.
Winter: Vasoconstriction and Muted Thirst
Winter poses a different sort of challenge for your circulation. Cold temperatures cause blood vessels to constrict, which can make it more challenging for the donation center’s staff to find a vein.
To make matters worse, the chilly air actually tricks your body into hiding its thirst. A study published in Medicine & Science in Sports & Exercise (MSSE) found that being in a cold environment decreases your desire to drink by up to 40%. This is when your system is running low on the vital fluids needed for a smooth appointment.
How What You Eat Affects Your Pre-Donation Screening
Your recent meals alter your blood composition, meaning your diet over the 24 to 48 hours leading up to your appointment can determine whether you have a successful session or face a temporary medical deferral.
Before you donate, a staff member checks your blood protein and hematocrit levels to confirm your body is ready for the procedure. Missing these target numbers means an automatic deferral for the day. Fueling your body with vitamin- and mineral-dense foods a day or two in advance keeps your blood chemistry where it needs to be.
Proper nutrition also stabilizes your blood sugar and blood volume during the procedure. This significantly reduces your likelihood of experiencing lightheadedness or fatigue during the process.
How to Prepare for Donating Plasma: The Best Foods to Eat Before the Procedure
High-Protein Foods
Plasma is protein-rich, and your body needs adequate stores to replenish what it gives. Eat a meal with plenty of protein within a few hours before your session.
Some good sources of protein include:
- Chicken, turkey, and lean beef
- Seafood like tuna, sardines, and shrimp
- Eggs or tofu
- Greek yogurt
- Beans and lentils
- Nuts and seeds
Iron-Rich Foods
Iron supports the production of hemoglobin, which carries oxygen to your tissues. Building iron stores takes weeks, so incorporate iron-rich foods into your regular diet, not just to your meals the day before your appointment:
- Red meat, poultry, and seafood
- Spinach, broccoli, and kale
- Enriched bread and cereals
Food and Drinks With Vitamin C
Vitamin C helps your body absorb plant-based iron better. Pair iron-rich meals with bell peppers, citrus fruits, or strawberries. A glass of orange juice alongside iron-fortified cereal is an easy breakfast option if you’re short on time.
What Not to Eat Before Your Plasma Donation
Eating too much high-fat food can cause lipemia, a condition that makes your plasma cloudy and unusable for life-saving medications. To keep your plasma clear and ready to help patients in need, avoid consuming high-fat meals on the day of your visit, including:
- Ham, bacon, and sausage
- Burgers and pizzas
- Whole milk or cream
- Butter and butter-based sauces
Adjust Your Sleep and Stress Management
Your physical readiness relies heavily on how well you rest and relax before your appointment. Because your vitals, such as your blood pressure and heart rate, are checked during your pre-donation screening, measurements beyond the normal levels can lead to an unexpected deferral.
To avoid deferrals, it’s important to manage your sleep schedule and stress levels before your scheduled appointment. Begin by aiming for seven to nine hours to stabilize your blood pressure, heart rate, and immune function. When you are feeling anxious, take a few quiet, mindful moments in your car to practice deep breathing and keep your vitals steady.
Adapt Your Exercise Routine
Avoid strenuous exercise on the day of and the day before your donation. Intense workouts increase dehydration and deplete electrolytes.
In summer, schedule any physical activity for early morning, when temperatures are lowest. In winter, light movement like walking helps promote circulation and makes vein access easier at your appointment.
Dress Appropriately
Donation staff need unrestricted access to veins in your inner arm, so wear clothing with sleeves that can be pushed up easily above the elbow.
During summer, lightweight and breathable fabrics keep you comfortable while waiting. In winter, dress in layers that you can remove once inside the center.
Make a Difference: Donate at ABO Plasma Calexico
Seasonal changes can impact the donation process and your comfort, but you can minimize the effects by hydrating, eating well, and getting enough sleep. At ABO Plasma, our trained and friendly staff will guide you through your visit and monitor your health throughout, so you can feel confident about giving plasma.
If it’s your first time donating at ABO Plasma in Calexico, view our donor checklist to determine your eligibility and book an appointment online. Returning donors are welcome to walk in at any time during office hours.